Home / 12,126.47-16,732.32-6,820.43

Finding the Fourth Proportional to 12,126.47, 16,732.32 and 6,820.43

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Solution

The fourth proportional to 12,126.47, 16,732.32 and 6,820.43 is: 9,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.47 : 16,732.32 = 6,820.43 : x
  2. Step 2: Convert to fraction form
    12,126.47/16,732.32 = 6,820.43/x
  3. Step 3: Cross multiply
    12,126.47x = 16,732.32 × 6,820.43
  4. Step 4: Simplify right side
    12,126.47x = 114,121,617.30
  5. Step 5: Solve for x
    x = 114,121,617.30/12,126.47
  6. Step 6: Final answer
    x = 9,410.95

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Half scale
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Double scale
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Similar ratio
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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.