Home / 10,988.20-15,146.10-8,626.36

Finding the Fourth Proportional to 10,988.20, 15,146.10 and 8,626.36

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Solution

The fourth proportional to 10,988.20, 15,146.10 and 8,626.36 is: 11,890.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.20 : 15,146.10 = 8,626.36 : x
  2. Step 2: Convert to fraction form
    10,988.20/15,146.10 = 8,626.36/x
  3. Step 3: Cross multiply
    10,988.20x = 15,146.10 × 8,626.36
  4. Step 4: Simplify right side
    10,988.20x = 130,655,711.20
  5. Step 5: Solve for x
    x = 130,655,711.20/10,988.20
  6. Step 6: Final answer
    x = 11,890.55

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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.