Home / 12,380.04-18,538.88-8,207.53

Finding the Fourth Proportional to 12,380.04, 18,538.88 and 8,207.53

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Solution

The fourth proportional to 12,380.04, 18,538.88 and 8,207.53 is: 12,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.04 : 18,538.88 = 8,207.53 : x
  2. Step 2: Convert to fraction form
    12,380.04/18,538.88 = 8,207.53/x
  3. Step 3: Cross multiply
    12,380.04x = 18,538.88 × 8,207.53
  4. Step 4: Simplify right side
    12,380.04x = 152,158,326.38
  5. Step 5: Solve for x
    x = 152,158,326.38/12,380.04
  6. Step 6: Final answer
    x = 12,290.62

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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.