Home / 37,781.42-52,140.11-21,862.80

Finding the Fourth Proportional to 37,781.42, 52,140.11 and 21,862.80

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Solution

The fourth proportional to 37,781.42, 52,140.11 and 21,862.80 is: 30,171.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,781.42 : 52,140.11 = 21,862.80 : x
  2. Step 2: Convert to fraction form
    37,781.42/52,140.11 = 21,862.80/x
  3. Step 3: Cross multiply
    37,781.42x = 52,140.11 × 21,862.80
  4. Step 4: Simplify right side
    37,781.42x = 1,139,928,687.59
  5. Step 5: Solve for x
    x = 1,139,928,687.59/37,781.42
  6. Step 6: Final answer
    x = 30,171.68

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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.