Home / 18,654.13-27,981.20-6,170.80

Finding the Fourth Proportional to 18,654.13, 27,981.20 and 6,170.80

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Solution

The fourth proportional to 18,654.13, 27,981.20 and 6,170.80 is: 9,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.13 : 27,981.20 = 6,170.80 : x
  2. Step 2: Convert to fraction form
    18,654.13/27,981.20 = 6,170.80/x
  3. Step 3: Cross multiply
    18,654.13x = 27,981.20 × 6,170.80
  4. Step 4: Simplify right side
    18,654.13x = 172,666,388.96
  5. Step 5: Solve for x
    x = 172,666,388.96/18,654.13
  6. Step 6: Final answer
    x = 9,256.20

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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.