Home / 11,585.91-15,988.50-6,280.72

Finding the Fourth Proportional to 11,585.91, 15,988.50 and 6,280.72

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Solution

The fourth proportional to 11,585.91, 15,988.50 and 6,280.72 is: 8,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.91 : 15,988.50 = 6,280.72 : x
  2. Step 2: Convert to fraction form
    11,585.91/15,988.50 = 6,280.72/x
  3. Step 3: Cross multiply
    11,585.91x = 15,988.50 × 6,280.72
  4. Step 4: Simplify right side
    11,585.91x = 100,419,251.75
  5. Step 5: Solve for x
    x = 100,419,251.75/11,585.91
  6. Step 6: Final answer
    x = 8,667.36

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Half scale
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Double 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.