Home / 12,380.90-18,569.55-3,614.90

Finding the Fourth Proportional to 12,380.90, 18,569.55 and 3,614.90

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Solution

The fourth proportional to 12,380.90, 18,569.55 and 3,614.90 is: 5,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.90 : 18,569.55 = 3,614.90 : x
  2. Step 2: Convert to fraction form
    12,380.90/18,569.55 = 3,614.90/x
  3. Step 3: Cross multiply
    12,380.90x = 18,569.55 × 3,614.90
  4. Step 4: Simplify right side
    12,380.90x = 67,127,066.30
  5. Step 5: Solve for x
    x = 67,127,066.30/12,380.90
  6. Step 6: Final answer
    x = 5,421.82

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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.