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Finding the Fourth Proportional to 43,997.80, 65,996.70 and 15,931.30

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Solution

The fourth proportional to 43,997.80, 65,996.70 and 15,931.30 is: 23,896.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,997.80 : 65,996.70 = 15,931.30 : x
  2. Step 2: Convert to fraction form
    43,997.80/65,996.70 = 15,931.30/x
  3. Step 3: Cross multiply
    43,997.80x = 65,996.70 × 15,931.30
  4. Step 4: Simplify right side
    43,997.80x = 1,051,413,226.71
  5. Step 5: Solve for x
    x = 1,051,413,226.71/43,997.80
  6. Step 6: Final answer
    x = 23,896.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.