Home / 12,381.60-18,573.04-3,617.20

Finding the Fourth Proportional to 12,381.60, 18,573.04 and 3,617.20

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Solution

The fourth proportional to 12,381.60, 18,573.04 and 3,617.20 is: 5,425.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.60 : 18,573.04 = 3,617.20 : x
  2. Step 2: Convert to fraction form
    12,381.60/18,573.04 = 3,617.20/x
  3. Step 3: Cross multiply
    12,381.60x = 18,573.04 × 3,617.20
  4. Step 4: Simplify right side
    12,381.60x = 67,182,400.29
  5. Step 5: Solve for x
    x = 67,182,400.29/12,381.60
  6. Step 6: Final answer
    x = 5,425.99

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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.