Home / 22,399.12-33,686.28-18,899.92

Finding the Fourth Proportional to 22,399.12, 33,686.28 and 18,899.92

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Solution

The fourth proportional to 22,399.12, 33,686.28 and 18,899.92 is: 28,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,399.12 : 33,686.28 = 18,899.92 : x
  2. Step 2: Convert to fraction form
    22,399.12/33,686.28 = 18,899.92/x
  3. Step 3: Cross multiply
    22,399.12x = 33,686.28 × 18,899.92
  4. Step 4: Simplify right side
    22,399.12x = 636,667,997.10
  5. Step 5: Solve for x
    x = 636,667,997.10/22,399.12
  6. Step 6: Final answer
    x = 28,423.80

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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.