Home / 13,270.98-19,915.42-5,479.76

Finding the Fourth Proportional to 13,270.98, 19,915.42 and 5,479.76

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Solution

The fourth proportional to 13,270.98, 19,915.42 and 5,479.76 is: 8,223.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.98 : 19,915.42 = 5,479.76 : x
  2. Step 2: Convert to fraction form
    13,270.98/19,915.42 = 5,479.76/x
  3. Step 3: Cross multiply
    13,270.98x = 19,915.42 × 5,479.76
  4. Step 4: Simplify right side
    13,270.98x = 109,131,721.90
  5. Step 5: Solve for x
    x = 109,131,721.90/13,270.98
  6. Step 6: Final answer
    x = 8,223.34

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1.5x scale

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.