Home / 18,654.14-27,981.30-7,561.04

Finding the Fourth Proportional to 18,654.14, 27,981.30 and 7,561.04

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Solution

The fourth proportional to 18,654.14, 27,981.30 and 7,561.04 is: 11,341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.14 : 27,981.30 = 7,561.04 : x
  2. Step 2: Convert to fraction form
    18,654.14/27,981.30 = 7,561.04/x
  3. Step 3: Cross multiply
    18,654.14x = 27,981.30 × 7,561.04
  4. Step 4: Simplify right side
    18,654.14x = 211,567,728.55
  5. Step 5: Solve for x
    x = 211,567,728.55/18,654.14
  6. Step 6: Final answer
    x = 11,341.60

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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.