Home / 10,115.60-15,165.30-4,267.40

Finding the Fourth Proportional to 10,115.60, 15,165.30 and 4,267.40

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Solution

The fourth proportional to 10,115.60, 15,165.30 and 4,267.40 is: 6,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.60 : 15,165.30 = 4,267.40 : x
  2. Step 2: Convert to fraction form
    10,115.60/15,165.30 = 4,267.40/x
  3. Step 3: Cross multiply
    10,115.60x = 15,165.30 × 4,267.40
  4. Step 4: Simplify right side
    10,115.60x = 64,716,401.22
  5. Step 5: Solve for x
    x = 64,716,401.22/10,115.60
  6. Step 6: Final answer
    x = 6,397.68

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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.