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Finding the Fourth Proportional to 18,612.69, 27,869.24 and 15,660.24

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Solution

The fourth proportional to 18,612.69, 27,869.24 and 15,660.24 is: 23,448.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.69 : 27,869.24 = 15,660.24 : x
  2. Step 2: Convert to fraction form
    18,612.69/27,869.24 = 15,660.24/x
  3. Step 3: Cross multiply
    18,612.69x = 27,869.24 × 15,660.24
  4. Step 4: Simplify right side
    18,612.69x = 436,438,908.72
  5. Step 5: Solve for x
    x = 436,438,908.72/18,612.69
  6. Step 6: Final answer
    x = 23,448.46

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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.