Home / 39,287.64-54,217.10-21,382.62

Finding the Fourth Proportional to 39,287.64, 54,217.10 and 21,382.62

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Solution

The fourth proportional to 39,287.64, 54,217.10 and 21,382.62 is: 29,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.64 : 54,217.10 = 21,382.62 : x
  2. Step 2: Convert to fraction form
    39,287.64/54,217.10 = 21,382.62/x
  3. Step 3: Cross multiply
    39,287.64x = 54,217.10 × 21,382.62
  4. Step 4: Simplify right side
    39,287.64x = 1,159,303,646.80
  5. Step 5: Solve for x
    x = 1,159,303,646.80/39,287.64
  6. Step 6: Final answer
    x = 29,508.10

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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.