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Finding the Fourth Proportional to 21,931.65, 32,910.05 and 21,753.29

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Solution

The fourth proportional to 21,931.65, 32,910.05 and 21,753.29 is: 32,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.65 : 32,910.05 = 21,753.29 : x
  2. Step 2: Convert to fraction form
    21,931.65/32,910.05 = 21,753.29/x
  3. Step 3: Cross multiply
    21,931.65x = 32,910.05 × 21,753.29
  4. Step 4: Simplify right side
    21,931.65x = 715,901,998.22
  5. Step 5: Solve for x
    x = 715,901,998.22/21,931.65
  6. Step 6: Final answer
    x = 32,642.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.