Home / 39,318.11-54,259.27-21,412.76

Finding the Fourth Proportional to 39,318.11, 54,259.27 and 21,412.76

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Solution

The fourth proportional to 39,318.11, 54,259.27 and 21,412.76 is: 29,549.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,318.11 : 54,259.27 = 21,412.76 : x
  2. Step 2: Convert to fraction form
    39,318.11/54,259.27 = 21,412.76/x
  3. Step 3: Cross multiply
    39,318.11x = 54,259.27 × 21,412.76
  4. Step 4: Simplify right side
    39,318.11x = 1,161,840,401.46
  5. Step 5: Solve for x
    x = 1,161,840,401.46/39,318.11
  6. Step 6: Final answer
    x = 29,549.75

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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.