Home / 28,861.52-39,822-16,286.30

Finding the Fourth Proportional to 28,861.52, 39,822 and 16,286.30

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Solution

The fourth proportional to 28,861.52, 39,822 and 16,286.30 is: 22,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.52 : 39,822 = 16,286.30 : x
  2. Step 2: Convert to fraction form
    28,861.52/39,822 = 16,286.30/x
  3. Step 3: Cross multiply
    28,861.52x = 39,822 × 16,286.30
  4. Step 4: Simplify right side
    28,861.52x = 648,553,038.60
  5. Step 5: Solve for x
    x = 648,553,038.60/28,861.52
  6. Step 6: Final answer
    x = 22,471.20

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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.