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Finding the Fourth Proportional to 12,487.68, 17,193.60 and 10,137.60

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Solution

The fourth proportional to 12,487.68, 17,193.60 and 10,137.60 is: 13,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.68 : 17,193.60 = 10,137.60 : x
  2. Step 2: Convert to fraction form
    12,487.68/17,193.60 = 10,137.60/x
  3. Step 3: Cross multiply
    12,487.68x = 17,193.60 × 10,137.60
  4. Step 4: Simplify right side
    12,487.68x = 174,301,839.36
  5. Step 5: Solve for x
    x = 174,301,839.36/12,487.68
  6. Step 6: Final answer
    x = 13,957.90

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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.