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Finding the Fourth Proportional to 12,657.50, 17,467.17 and 7,355.30

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Solution

The fourth proportional to 12,657.50, 17,467.17 and 7,355.30 is: 10,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.50 : 17,467.17 = 7,355.30 : x
  2. Step 2: Convert to fraction form
    12,657.50/17,467.17 = 7,355.30/x
  3. Step 3: Cross multiply
    12,657.50x = 17,467.17 × 7,355.30
  4. Step 4: Simplify right side
    12,657.50x = 128,476,275.50
  5. Step 5: Solve for x
    x = 128,476,275.50/12,657.50
  6. Step 6: Final answer
    x = 10,150.21

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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.