Home / 28,687.20-39,586.12-16,109.52

Finding the Fourth Proportional to 28,687.20, 39,586.12 and 16,109.52

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Solution

The fourth proportional to 28,687.20, 39,586.12 and 16,109.52 is: 22,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.20 : 39,586.12 = 16,109.52 : x
  2. Step 2: Convert to fraction form
    28,687.20/39,586.12 = 16,109.52/x
  3. Step 3: Cross multiply
    28,687.20x = 39,586.12 × 16,109.52
  4. Step 4: Simplify right side
    28,687.20x = 637,713,391.86
  5. Step 5: Solve for x
    x = 637,713,391.86/28,687.20
  6. Step 6: Final answer
    x = 22,229.89

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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.