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Finding the Fourth Proportional to 12,438.96, 17,172.10 and 9,599.95

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Solution

The fourth proportional to 12,438.96, 17,172.10 and 9,599.95 is: 13,252.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.96 : 17,172.10 = 9,599.95 : x
  2. Step 2: Convert to fraction form
    12,438.96/17,172.10 = 9,599.95/x
  3. Step 3: Cross multiply
    12,438.96x = 17,172.10 × 9,599.95
  4. Step 4: Simplify right side
    12,438.96x = 164,851,301.40
  5. Step 5: Solve for x
    x = 164,851,301.40/12,438.96
  6. Step 6: Final answer
    x = 13,252.82

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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.