Home / 12,385.25-18,577.88-3,620.17

Finding the Fourth Proportional to 12,385.25, 18,577.88 and 3,620.17

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Solution

The fourth proportional to 12,385.25, 18,577.88 and 3,620.17 is: 5,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.25 : 18,577.88 = 3,620.17 : x
  2. Step 2: Convert to fraction form
    12,385.25/18,577.88 = 3,620.17/x
  3. Step 3: Cross multiply
    12,385.25x = 18,577.88 × 3,620.17
  4. Step 4: Simplify right side
    12,385.25x = 67,255,060.47
  5. Step 5: Solve for x
    x = 67,255,060.47/12,385.25
  6. Step 6: Final answer
    x = 5,430.25

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Similar ratio
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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.