Home / 18,132.90-27,199.35-12,884.10

Finding the Fourth Proportional to 18,132.90, 27,199.35 and 12,884.10

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Solution

The fourth proportional to 18,132.90, 27,199.35 and 12,884.10 is: 19,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,132.90 : 27,199.35 = 12,884.10 : x
  2. Step 2: Convert to fraction form
    18,132.90/27,199.35 = 12,884.10/x
  3. Step 3: Cross multiply
    18,132.90x = 27,199.35 × 12,884.10
  4. Step 4: Simplify right side
    18,132.90x = 350,439,145.34
  5. Step 5: Solve for x
    x = 350,439,145.34/18,132.90
  6. Step 6: Final answer
    x = 19,326.15

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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.