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Finding the Fourth Proportional to 39,463.40, 54,463.25 and 21,561.11

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Solution

The fourth proportional to 39,463.40, 54,463.25 and 21,561.11 is: 29,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,463.40 : 54,463.25 = 21,561.11 : x
  2. Step 2: Convert to fraction form
    39,463.40/54,463.25 = 21,561.11/x
  3. Step 3: Cross multiply
    39,463.40x = 54,463.25 × 21,561.11
  4. Step 4: Simplify right side
    39,463.40x = 1,174,287,744.09
  5. Step 5: Solve for x
    x = 1,174,287,744.09/39,463.40
  6. Step 6: Final answer
    x = 29,756.37

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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.