Home / 12,387.20-17,094.11-6,721.92

Finding the Fourth Proportional to 12,387.20, 17,094.11 and 6,721.92

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Solution

The fourth proportional to 12,387.20, 17,094.11 and 6,721.92 is: 9,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.20 : 17,094.11 = 6,721.92 : x
  2. Step 2: Convert to fraction form
    12,387.20/17,094.11 = 6,721.92/x
  3. Step 3: Cross multiply
    12,387.20x = 17,094.11 × 6,721.92
  4. Step 4: Simplify right side
    12,387.20x = 114,905,206.28
  5. Step 5: Solve for x
    x = 114,905,206.28/12,387.20
  6. Step 6: Final answer
    x = 9,276.13

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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.