Home / 21,387.38-32,086.38-8,903.66

Finding the Fourth Proportional to 21,387.38, 32,086.38 and 8,903.66

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Solution

The fourth proportional to 21,387.38, 32,086.38 and 8,903.66 is: 13,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.38 : 32,086.38 = 8,903.66 : x
  2. Step 2: Convert to fraction form
    21,387.38/32,086.38 = 8,903.66/x
  3. Step 3: Cross multiply
    21,387.38x = 32,086.38 × 8,903.66
  4. Step 4: Simplify right side
    21,387.38x = 285,686,218.15
  5. Step 5: Solve for x
    x = 285,686,218.15/21,387.38
  6. Step 6: Final answer
    x = 13,357.70

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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.