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Finding the Fourth Proportional to 18,351.40, 27,454.20 and 15,913.30

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Solution

The fourth proportional to 18,351.40, 27,454.20 and 15,913.30 is: 23,806.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.40 : 27,454.20 = 15,913.30 : x
  2. Step 2: Convert to fraction form
    18,351.40/27,454.20 = 15,913.30/x
  3. Step 3: Cross multiply
    18,351.40x = 27,454.20 × 15,913.30
  4. Step 4: Simplify right side
    18,351.40x = 436,886,920.86
  5. Step 5: Solve for x
    x = 436,886,920.86/18,351.40
  6. Step 6: Final answer
    x = 23,806.74

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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.