Home / 12,387.12-18,613.08-11,599.80

Finding the Fourth Proportional to 12,387.12, 18,613.08 and 11,599.80

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Solution

The fourth proportional to 12,387.12, 18,613.08 and 11,599.80 is: 17,430.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.12 : 18,613.08 = 11,599.80 : x
  2. Step 2: Convert to fraction form
    12,387.12/18,613.08 = 11,599.80/x
  3. Step 3: Cross multiply
    12,387.12x = 18,613.08 × 11,599.80
  4. Step 4: Simplify right side
    12,387.12x = 215,908,005.38
  5. Step 5: Solve for x
    x = 215,908,005.38/12,387.12
  6. Step 6: Final answer
    x = 17,430.04

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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.