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Finding the Fourth Proportional to 12,703.75, 17,531.72 and 7,397.71

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Solution

The fourth proportional to 12,703.75, 17,531.72 and 7,397.71 is: 10,209.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,703.75 : 17,531.72 = 7,397.71 : x
  2. Step 2: Convert to fraction form
    12,703.75/17,531.72 = 7,397.71/x
  3. Step 3: Cross multiply
    12,703.75x = 17,531.72 × 7,397.71
  4. Step 4: Simplify right side
    12,703.75x = 129,694,580.36
  5. Step 5: Solve for x
    x = 129,694,580.36/12,703.75
  6. Step 6: Final answer
    x = 10,209.16

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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.