Home / 39,681.11-54,761.52-21,776.76

Finding the Fourth Proportional to 39,681.11, 54,761.52 and 21,776.76

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Solution

The fourth proportional to 39,681.11, 54,761.52 and 21,776.76 is: 30,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.11 : 54,761.52 = 21,776.76 : x
  2. Step 2: Convert to fraction form
    39,681.11/54,761.52 = 21,776.76/x
  3. Step 3: Cross multiply
    39,681.11x = 54,761.52 × 21,776.76
  4. Step 4: Simplify right side
    39,681.11x = 1,192,528,423.83
  5. Step 5: Solve for x
    x = 1,192,528,423.83/39,681.11
  6. Step 6: Final answer
    x = 30,052.80

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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.