Home / 22,670.20-31,280.14-13,238.76

Finding the Fourth Proportional to 22,670.20, 31,280.14 and 13,238.76

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Solution

The fourth proportional to 22,670.20, 31,280.14 and 13,238.76 is: 18,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,670.20 : 31,280.14 = 13,238.76 : x
  2. Step 2: Convert to fraction form
    22,670.20/31,280.14 = 13,238.76/x
  3. Step 3: Cross multiply
    22,670.20x = 31,280.14 × 13,238.76
  4. Step 4: Simplify right side
    22,670.20x = 414,110,266.23
  5. Step 5: Solve for x
    x = 414,110,266.23/22,670.20
  6. Step 6: Final answer
    x = 18,266.72

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Half scale
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Double scale
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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.