Home / 13,247.90-19,872.05-3,386.96

Finding the Fourth Proportional to 13,247.90, 19,872.05 and 3,386.96

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Solution

The fourth proportional to 13,247.90, 19,872.05 and 3,386.96 is: 5,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.90 : 19,872.05 = 3,386.96 : x
  2. Step 2: Convert to fraction form
    13,247.90/19,872.05 = 3,386.96/x
  3. Step 3: Cross multiply
    13,247.90x = 19,872.05 × 3,386.96
  4. Step 4: Simplify right side
    13,247.90x = 67,305,838.47
  5. Step 5: Solve for x
    x = 67,305,838.47/13,247.90
  6. Step 6: Final answer
    x = 5,080.49

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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.