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Finding the Fourth Proportional to 12,761, 17,612.07 and 7,458.74

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Solution

The fourth proportional to 12,761, 17,612.07 and 7,458.74 is: 10,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761 : 17,612.07 = 7,458.74 : x
  2. Step 2: Convert to fraction form
    12,761/17,612.07 = 7,458.74/x
  3. Step 3: Cross multiply
    12,761x = 17,612.07 × 7,458.74
  4. Step 4: Simplify right side
    12,761x = 131,363,850.99
  5. Step 5: Solve for x
    x = 131,363,850.99/12,761
  6. Step 6: Final answer
    x = 10,294.17

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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.