Home / 10,187.90-15,212.15-9,126.87

Finding the Fourth Proportional to 10,187.90, 15,212.15 and 9,126.87

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Solution

The fourth proportional to 10,187.90, 15,212.15 and 9,126.87 is: 13,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.90 : 15,212.15 = 9,126.87 : x
  2. Step 2: Convert to fraction form
    10,187.90/15,212.15 = 9,126.87/x
  3. Step 3: Cross multiply
    10,187.90x = 15,212.15 × 9,126.87
  4. Step 4: Simplify right side
    10,187.90x = 138,839,315.47
  5. Step 5: Solve for x
    x = 138,839,315.47/10,187.90
  6. Step 6: Final answer
    x = 13,627.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.