Home / 13,630.16-20,440.88-4,394

Finding the Fourth Proportional to 13,630.16, 20,440.88 and 4,394

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Solution

The fourth proportional to 13,630.16, 20,440.88 and 4,394 is: 6,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.16 : 20,440.88 = 4,394 : x
  2. Step 2: Convert to fraction form
    13,630.16/20,440.88 = 4,394/x
  3. Step 3: Cross multiply
    13,630.16x = 20,440.88 × 4,394
  4. Step 4: Simplify right side
    13,630.16x = 89,817,226.72
  5. Step 5: Solve for x
    x = 89,817,226.72/13,630.16
  6. Step 6: Final answer
    x = 6,589.59

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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.