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Finding the Fourth Proportional to 12,475.29, 17,215.97 and 6,886.29

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Solution

The fourth proportional to 12,475.29, 17,215.97 and 6,886.29 is: 9,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.29 : 17,215.97 = 6,886.29 : x
  2. Step 2: Convert to fraction form
    12,475.29/17,215.97 = 6,886.29/x
  3. Step 3: Cross multiply
    12,475.29x = 17,215.97 × 6,886.29
  4. Step 4: Simplify right side
    12,475.29x = 118,554,127.62
  5. Step 5: Solve for x
    x = 118,554,127.62/12,475.29
  6. Step 6: Final answer
    x = 9,503.12

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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.