Home / 11,126.28-15,349.90-7,146.84

Finding the Fourth Proportional to 11,126.28, 15,349.90 and 7,146.84

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Solution

The fourth proportional to 11,126.28, 15,349.90 and 7,146.84 is: 9,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.28 : 15,349.90 = 7,146.84 : x
  2. Step 2: Convert to fraction form
    11,126.28/15,349.90 = 7,146.84/x
  3. Step 3: Cross multiply
    11,126.28x = 15,349.90 × 7,146.84
  4. Step 4: Simplify right side
    11,126.28x = 109,703,279.32
  5. Step 5: Solve for x
    x = 109,703,279.32/11,126.28
  6. Step 6: Final answer
    x = 9,859.83

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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.