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Finding the Fourth Proportional to 10,856.40, 16,294.20 and 9,301.20

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Solution

The fourth proportional to 10,856.40, 16,294.20 and 9,301.20 is: 13,960.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.40 : 16,294.20 = 9,301.20 : x
  2. Step 2: Convert to fraction form
    10,856.40/16,294.20 = 9,301.20/x
  3. Step 3: Cross multiply
    10,856.40x = 16,294.20 × 9,301.20
  4. Step 4: Simplify right side
    10,856.40x = 151,555,613.04
  5. Step 5: Solve for x
    x = 151,555,613.04/10,856.40
  6. Step 6: Final answer
    x = 13,960.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.