Home / 12,381.61-18,577.28-5,451.25

Finding the Fourth Proportional to 12,381.61, 18,577.28 and 5,451.25

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Solution

The fourth proportional to 12,381.61, 18,577.28 and 5,451.25 is: 8,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.61 : 18,577.28 = 5,451.25 : x
  2. Step 2: Convert to fraction form
    12,381.61/18,577.28 = 5,451.25/x
  3. Step 3: Cross multiply
    12,381.61x = 18,577.28 × 5,451.25
  4. Step 4: Simplify right side
    12,381.61x = 101,269,397.60
  5. Step 5: Solve for x
    x = 101,269,397.60/12,381.61
  6. Step 6: Final answer
    x = 8,179.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.