Home / 22,785.86-31,440.71-15,220.05

Finding the Fourth Proportional to 22,785.86, 31,440.71 and 15,220.05

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Solution

The fourth proportional to 22,785.86, 31,440.71 and 15,220.05 is: 21,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.86 : 31,440.71 = 15,220.05 : x
  2. Step 2: Convert to fraction form
    22,785.86/31,440.71 = 15,220.05/x
  3. Step 3: Cross multiply
    22,785.86x = 31,440.71 × 15,220.05
  4. Step 4: Simplify right side
    22,785.86x = 478,529,216.29
  5. Step 5: Solve for x
    x = 478,529,216.29/22,785.86
  6. Step 6: Final answer
    x = 21,001.15

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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.