Home / 12,611.90-17,385.75-8,073.92

Finding the Fourth Proportional to 12,611.90, 17,385.75 and 8,073.92

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Solution

The fourth proportional to 12,611.90, 17,385.75 and 8,073.92 is: 11,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.90 : 17,385.75 = 8,073.92 : x
  2. Step 2: Convert to fraction form
    12,611.90/17,385.75 = 8,073.92/x
  3. Step 3: Cross multiply
    12,611.90x = 17,385.75 × 8,073.92
  4. Step 4: Simplify right side
    12,611.90x = 140,371,154.64
  5. Step 5: Solve for x
    x = 140,371,154.64/12,611.90
  6. Step 6: Final answer
    x = 11,130.06

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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.