Home / 22,520.19-31,077.86-12,448.65

Finding the Fourth Proportional to 22,520.19, 31,077.86 and 12,448.65

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Solution

The fourth proportional to 22,520.19, 31,077.86 and 12,448.65 is: 17,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,520.19 : 31,077.86 = 12,448.65 : x
  2. Step 2: Convert to fraction form
    22,520.19/31,077.86 = 12,448.65/x
  3. Step 3: Cross multiply
    22,520.19x = 31,077.86 × 12,448.65
  4. Step 4: Simplify right side
    22,520.19x = 386,877,339.65
  5. Step 5: Solve for x
    x = 386,877,339.65/22,520.19
  6. Step 6: Final answer
    x = 17,179.13

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Half scale
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Double scale
Find fourth proportional to 22,521.19, 31,079.23 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.