Home / 28,191.52-38,885.54-18,132.69

Finding the Fourth Proportional to 28,191.52, 38,885.54 and 18,132.69

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Solution

The fourth proportional to 28,191.52, 38,885.54 and 18,132.69 is: 25,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.52 : 38,885.54 = 18,132.69 : x
  2. Step 2: Convert to fraction form
    28,191.52/38,885.54 = 18,132.69/x
  3. Step 3: Cross multiply
    28,191.52x = 38,885.54 × 18,132.69
  4. Step 4: Simplify right side
    28,191.52x = 705,099,442.30
  5. Step 5: Solve for x
    x = 705,099,442.30/28,191.52
  6. Step 6: Final answer
    x = 25,011.05

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Half scale
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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.