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Finding the Fourth Proportional to 12,642.13, 17,446.01 and 6,976.95

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Solution

The fourth proportional to 12,642.13, 17,446.01 and 6,976.95 is: 9,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.13 : 17,446.01 = 6,976.95 : x
  2. Step 2: Convert to fraction form
    12,642.13/17,446.01 = 6,976.95/x
  3. Step 3: Cross multiply
    12,642.13x = 17,446.01 × 6,976.95
  4. Step 4: Simplify right side
    12,642.13x = 121,719,939.47
  5. Step 5: Solve for x
    x = 121,719,939.47/12,642.13
  6. Step 6: Final answer
    x = 9,628.12

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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.