Home / 20,269.88-30,438.43-12,527.90

Finding the Fourth Proportional to 20,269.88, 30,438.43 and 12,527.90

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Solution

The fourth proportional to 20,269.88, 30,438.43 and 12,527.90 is: 18,812.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.88 : 30,438.43 = 12,527.90 : x
  2. Step 2: Convert to fraction form
    20,269.88/30,438.43 = 12,527.90/x
  3. Step 3: Cross multiply
    20,269.88x = 30,438.43 × 12,527.90
  4. Step 4: Simplify right side
    20,269.88x = 381,329,607.20
  5. Step 5: Solve for x
    x = 381,329,607.20/20,269.88
  6. Step 6: Final answer
    x = 18,812.62

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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.