Home / 22,520.81-31,077.36-12,448.65

Finding the Fourth Proportional to 22,520.81, 31,077.36 and 12,448.65

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Solution

The fourth proportional to 22,520.81, 31,077.36 and 12,448.65 is: 17,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,520.81 : 31,077.36 = 12,448.65 : x
  2. Step 2: Convert to fraction form
    22,520.81/31,077.36 = 12,448.65/x
  3. Step 3: Cross multiply
    22,520.81x = 31,077.36 × 12,448.65
  4. Step 4: Simplify right side
    22,520.81x = 386,871,177.56
  5. Step 5: Solve for x
    x = 386,871,177.56/22,520.81
  6. Step 6: Final answer
    x = 17,178.39

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Find fourth proportional to 11,260.41, 15,538.68 and 6,224.33
Half scale
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Double scale
Find fourth proportional to 22,521.81, 31,078.74 and 12,449.65
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.