Home / 12,165.78-18,248.76-4,267.92

Finding the Fourth Proportional to 12,165.78, 18,248.76 and 4,267.92

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Solution

The fourth proportional to 12,165.78, 18,248.76 and 4,267.92 is: 6,401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.78 : 18,248.76 = 4,267.92 : x
  2. Step 2: Convert to fraction form
    12,165.78/18,248.76 = 4,267.92/x
  3. Step 3: Cross multiply
    12,165.78x = 18,248.76 × 4,267.92
  4. Step 4: Simplify right side
    12,165.78x = 77,884,247.78
  5. Step 5: Solve for x
    x = 77,884,247.78/12,165.78
  6. Step 6: Final answer
    x = 6,401.91

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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.