Home / 10,087.52-15,131.12-6,139.84

Finding the Fourth Proportional to 10,087.52, 15,131.12 and 6,139.84

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Solution

The fourth proportional to 10,087.52, 15,131.12 and 6,139.84 is: 9,209.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.52 : 15,131.12 = 6,139.84 : x
  2. Step 2: Convert to fraction form
    10,087.52/15,131.12 = 6,139.84/x
  3. Step 3: Cross multiply
    10,087.52x = 15,131.12 × 6,139.84
  4. Step 4: Simplify right side
    10,087.52x = 92,902,655.82
  5. Step 5: Solve for x
    x = 92,902,655.82/10,087.52
  6. Step 6: Final answer
    x = 9,209.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.