Home / 13,648.32-20,475.36-6,721.92

Finding the Fourth Proportional to 13,648.32, 20,475.36 and 6,721.92

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Solution

The fourth proportional to 13,648.32, 20,475.36 and 6,721.92 is: 10,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.32 : 20,475.36 = 6,721.92 : x
  2. Step 2: Convert to fraction form
    13,648.32/20,475.36 = 6,721.92/x
  3. Step 3: Cross multiply
    13,648.32x = 20,475.36 × 6,721.92
  4. Step 4: Simplify right side
    13,648.32x = 137,633,731.89
  5. Step 5: Solve for x
    x = 137,633,731.89/13,648.32
  6. Step 6: Final answer
    x = 10,084.30

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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.