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Finding the Fourth Proportional to 18,223.80, 27,351.90 and 15,599.40

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Solution

The fourth proportional to 18,223.80, 27,351.90 and 15,599.40 is: 23,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,223.80 : 27,351.90 = 15,599.40 : x
  2. Step 2: Convert to fraction form
    18,223.80/27,351.90 = 15,599.40/x
  3. Step 3: Cross multiply
    18,223.80x = 27,351.90 × 15,599.40
  4. Step 4: Simplify right side
    18,223.80x = 426,673,228.86
  5. Step 5: Solve for x
    x = 426,673,228.86/18,223.80
  6. Step 6: Final answer
    x = 23,412.97

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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.