Home / 18,061.20-27,091.80-12,156.30

Finding the Fourth Proportional to 18,061.20, 27,091.80 and 12,156.30

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Solution

The fourth proportional to 18,061.20, 27,091.80 and 12,156.30 is: 18,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,061.20 : 27,091.80 = 12,156.30 : x
  2. Step 2: Convert to fraction form
    18,061.20/27,091.80 = 12,156.30/x
  3. Step 3: Cross multiply
    18,061.20x = 27,091.80 × 12,156.30
  4. Step 4: Simplify right side
    18,061.20x = 329,336,048.34
  5. Step 5: Solve for x
    x = 329,336,048.34/18,061.20
  6. Step 6: Final answer
    x = 18,234.45

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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.