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Finding the Fourth Proportional to 39,473.79, 54,474.03 and 21,569.10

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Solution

The fourth proportional to 39,473.79, 54,474.03 and 21,569.10 is: 29,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,473.79 : 54,474.03 = 21,569.10 : x
  2. Step 2: Convert to fraction form
    39,473.79/54,474.03 = 21,569.10/x
  3. Step 3: Cross multiply
    39,473.79x = 54,474.03 × 21,569.10
  4. Step 4: Simplify right side
    39,473.79x = 1,174,955,800.47
  5. Step 5: Solve for x
    x = 1,174,955,800.47/39,473.79
  6. Step 6: Final answer
    x = 29,765.47

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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.