Home / 39,330.05-54,275.20-21,425.07

Finding the Fourth Proportional to 39,330.05, 54,275.20 and 21,425.07

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Solution

The fourth proportional to 39,330.05, 54,275.20 and 21,425.07 is: 29,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330.05 : 54,275.20 = 21,425.07 : x
  2. Step 2: Convert to fraction form
    39,330.05/54,275.20 = 21,425.07/x
  3. Step 3: Cross multiply
    39,330.05x = 54,275.20 × 21,425.07
  4. Step 4: Simplify right side
    39,330.05x = 1,162,849,809.29
  5. Step 5: Solve for x
    x = 1,162,849,809.29/39,330.05
  6. Step 6: Final answer
    x = 29,566.45

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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.