Home / 18,129.12-27,195.84-6,443.52

Finding the Fourth Proportional to 18,129.12, 27,195.84 and 6,443.52

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Solution

The fourth proportional to 18,129.12, 27,195.84 and 6,443.52 is: 9,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.12 : 27,195.84 = 6,443.52 : x
  2. Step 2: Convert to fraction form
    18,129.12/27,195.84 = 6,443.52/x
  3. Step 3: Cross multiply
    18,129.12x = 27,195.84 × 6,443.52
  4. Step 4: Simplify right side
    18,129.12x = 175,236,938.96
  5. Step 5: Solve for x
    x = 175,236,938.96/18,129.12
  6. Step 6: Final answer
    x = 9,666.05

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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.