Home / 13,384.40-20,065.31-8,443.15

Finding the Fourth Proportional to 13,384.40, 20,065.31 and 8,443.15

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Solution

The fourth proportional to 13,384.40, 20,065.31 and 8,443.15 is: 12,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.40 : 20,065.31 = 8,443.15 : x
  2. Step 2: Convert to fraction form
    13,384.40/20,065.31 = 8,443.15/x
  3. Step 3: Cross multiply
    13,384.40x = 20,065.31 × 8,443.15
  4. Step 4: Simplify right side
    13,384.40x = 169,414,321.80
  5. Step 5: Solve for x
    x = 169,414,321.80/13,384.40
  6. Step 6: Final answer
    x = 12,657.60

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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.