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Finding the Fourth Proportional to 39,595.65, 54,642.02 and 21,691.31

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Solution

The fourth proportional to 39,595.65, 54,642.02 and 21,691.31 is: 29,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,595.65 : 54,642.02 = 21,691.31 : x
  2. Step 2: Convert to fraction form
    39,595.65/54,642.02 = 21,691.31/x
  3. Step 3: Cross multiply
    39,595.65x = 54,642.02 × 21,691.31
  4. Step 4: Simplify right side
    39,595.65x = 1,185,256,613.18
  5. Step 5: Solve for x
    x = 1,185,256,613.18/39,595.65
  6. Step 6: Final answer
    x = 29,934.01

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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.