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Finding the Fourth Proportional to 11,459.20, 15,813.04 and 6,423.08

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Solution

The fourth proportional to 11,459.20, 15,813.04 and 6,423.08 is: 8,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.20 : 15,813.04 = 6,423.08 : x
  2. Step 2: Convert to fraction form
    11,459.20/15,813.04 = 6,423.08/x
  3. Step 3: Cross multiply
    11,459.20x = 15,813.04 × 6,423.08
  4. Step 4: Simplify right side
    11,459.20x = 101,568,420.96
  5. Step 5: Solve for x
    x = 101,568,420.96/11,459.20
  6. Step 6: Final answer
    x = 8,863.48

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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.