Home / 10,966.11-15,119.51-9,151.74

Finding the Fourth Proportional to 10,966.11, 15,119.51 and 9,151.74

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Solution

The fourth proportional to 10,966.11, 15,119.51 and 9,151.74 is: 12,617.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.11 : 15,119.51 = 9,151.74 : x
  2. Step 2: Convert to fraction form
    10,966.11/15,119.51 = 9,151.74/x
  3. Step 3: Cross multiply
    10,966.11x = 15,119.51 × 9,151.74
  4. Step 4: Simplify right side
    10,966.11x = 138,369,824.45
  5. Step 5: Solve for x
    x = 138,369,824.45/10,966.11
  6. Step 6: Final answer
    x = 12,617.96

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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.