Home / 13,622.52-18,800.43-9,155.61

Finding the Fourth Proportional to 13,622.52, 18,800.43 and 9,155.61

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Solution

The fourth proportional to 13,622.52, 18,800.43 and 9,155.61 is: 12,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.52 : 18,800.43 = 9,155.61 : x
  2. Step 2: Convert to fraction form
    13,622.52/18,800.43 = 9,155.61/x
  3. Step 3: Cross multiply
    13,622.52x = 18,800.43 × 9,155.61
  4. Step 4: Simplify right side
    13,622.52x = 172,129,404.91
  5. Step 5: Solve for x
    x = 172,129,404.91/13,622.52
  6. Step 6: Final answer
    x = 12,635.65

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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.