Home / 12,617.30-17,411.66-7,312.61

Finding the Fourth Proportional to 12,617.30, 17,411.66 and 7,312.61

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Solution

The fourth proportional to 12,617.30, 17,411.66 and 7,312.61 is: 10,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.30 : 17,411.66 = 7,312.61 : x
  2. Step 2: Convert to fraction form
    12,617.30/17,411.66 = 7,312.61/x
  3. Step 3: Cross multiply
    12,617.30x = 17,411.66 × 7,312.61
  4. Step 4: Simplify right side
    12,617.30x = 127,324,713.42
  5. Step 5: Solve for x
    x = 127,324,713.42/12,617.30
  6. Step 6: Final answer
    x = 10,091.28

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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.