Home / 12,387.57-17,094.78-6,722.43

Finding the Fourth Proportional to 12,387.57, 17,094.78 and 6,722.43

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Solution

The fourth proportional to 12,387.57, 17,094.78 and 6,722.43 is: 9,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.57 : 17,094.78 = 6,722.43 : x
  2. Step 2: Convert to fraction form
    12,387.57/17,094.78 = 6,722.43/x
  3. Step 3: Cross multiply
    12,387.57x = 17,094.78 × 6,722.43
  4. Step 4: Simplify right side
    12,387.57x = 114,918,461.92
  5. Step 5: Solve for x
    x = 114,918,461.92/12,387.57
  6. Step 6: Final answer
    x = 9,276.92

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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.