Home / 12,387.86-17,095.20-6,722.63

Finding the Fourth Proportional to 12,387.86, 17,095.20 and 6,722.63

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Solution

The fourth proportional to 12,387.86, 17,095.20 and 6,722.63 is: 9,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.86 : 17,095.20 = 6,722.63 : x
  2. Step 2: Convert to fraction form
    12,387.86/17,095.20 = 6,722.63/x
  3. Step 3: Cross multiply
    12,387.86x = 17,095.20 × 6,722.63
  4. Step 4: Simplify right side
    12,387.86x = 114,924,704.38
  5. Step 5: Solve for x
    x = 114,924,704.38/12,387.86
  6. Step 6: Final answer
    x = 9,277.20

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Half scale
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Double scale
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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.