Home / 18,213.96-25,138.04-13,126.35

Finding the Fourth Proportional to 18,213.96, 25,138.04 and 13,126.35

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Solution

The fourth proportional to 18,213.96, 25,138.04 and 13,126.35 is: 18,116.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.96 : 25,138.04 = 13,126.35 : x
  2. Step 2: Convert to fraction form
    18,213.96/25,138.04 = 13,126.35/x
  3. Step 3: Cross multiply
    18,213.96x = 25,138.04 × 13,126.35
  4. Step 4: Simplify right side
    18,213.96x = 329,970,711.35
  5. Step 5: Solve for x
    x = 329,970,711.35/18,213.96
  6. Step 6: Final answer
    x = 18,116.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.