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Finding the Fourth Proportional to 12,428.62, 17,151.86 and 6,763.74

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Solution

The fourth proportional to 12,428.62, 17,151.86 and 6,763.74 is: 9,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.62 : 17,151.86 = 6,763.74 : x
  2. Step 2: Convert to fraction form
    12,428.62/17,151.86 = 6,763.74/x
  3. Step 3: Cross multiply
    12,428.62x = 17,151.86 × 6,763.74
  4. Step 4: Simplify right side
    12,428.62x = 116,010,655.12
  5. Step 5: Solve for x
    x = 116,010,655.12/12,428.62
  6. Step 6: Final answer
    x = 9,334.15

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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.