Home / 20,074.60-30,102.52-8,981.40

Finding the Fourth Proportional to 20,074.60, 30,102.52 and 8,981.40

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Solution

The fourth proportional to 20,074.60, 30,102.52 and 8,981.40 is: 13,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.60 : 30,102.52 = 8,981.40 : x
  2. Step 2: Convert to fraction form
    20,074.60/30,102.52 = 8,981.40/x
  3. Step 3: Cross multiply
    20,074.60x = 30,102.52 × 8,981.40
  4. Step 4: Simplify right side
    20,074.60x = 270,362,773.13
  5. Step 5: Solve for x
    x = 270,362,773.13/20,074.60
  6. Step 6: Final answer
    x = 13,467.90

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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.