Home / 11,206.28-15,459.46-7,171.20

Finding the Fourth Proportional to 11,206.28, 15,459.46 and 7,171.20

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Solution

The fourth proportional to 11,206.28, 15,459.46 and 7,171.20 is: 9,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,206.28 : 15,459.46 = 7,171.20 : x
  2. Step 2: Convert to fraction form
    11,206.28/15,459.46 = 7,171.20/x
  3. Step 3: Cross multiply
    11,206.28x = 15,459.46 × 7,171.20
  4. Step 4: Simplify right side
    11,206.28x = 110,862,861.62
  5. Step 5: Solve for x
    x = 110,862,861.62/11,206.28
  6. Step 6: Final answer
    x = 9,892.92

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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.