Home / 13,384.32-20,072.28-5,591.52

Finding the Fourth Proportional to 13,384.32, 20,072.28 and 5,591.52

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Solution

The fourth proportional to 13,384.32, 20,072.28 and 5,591.52 is: 8,385.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.32 : 20,072.28 = 5,591.52 : x
  2. Step 2: Convert to fraction form
    13,384.32/20,072.28 = 5,591.52/x
  3. Step 3: Cross multiply
    13,384.32x = 20,072.28 × 5,591.52
  4. Step 4: Simplify right side
    13,384.32x = 112,234,555.07
  5. Step 5: Solve for x
    x = 112,234,555.07/13,384.32
  6. Step 6: Final answer
    x = 8,385.53

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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.