Home / 10,987.85-15,160.61-6,510.83

Finding the Fourth Proportional to 10,987.85, 15,160.61 and 6,510.83

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Solution

The fourth proportional to 10,987.85, 15,160.61 and 6,510.83 is: 8,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.85 : 15,160.61 = 6,510.83 : x
  2. Step 2: Convert to fraction form
    10,987.85/15,160.61 = 6,510.83/x
  3. Step 3: Cross multiply
    10,987.85x = 15,160.61 × 6,510.83
  4. Step 4: Simplify right side
    10,987.85x = 98,708,046.05
  5. Step 5: Solve for x
    x = 98,708,046.05/10,987.85
  6. Step 6: Final answer
    x = 8,983.38

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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.