Home / 18,120.72-27,179.82-6,432.24

Finding the Fourth Proportional to 18,120.72, 27,179.82 and 6,432.24

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Solution

The fourth proportional to 18,120.72, 27,179.82 and 6,432.24 is: 9,647.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.72 : 27,179.82 = 6,432.24 : x
  2. Step 2: Convert to fraction form
    18,120.72/27,179.82 = 6,432.24/x
  3. Step 3: Cross multiply
    18,120.72x = 27,179.82 × 6,432.24
  4. Step 4: Simplify right side
    18,120.72x = 174,827,125.40
  5. Step 5: Solve for x
    x = 174,827,125.40/18,120.72
  6. Step 6: Final answer
    x = 9,647.91

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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.