Home / 13,531.23-20,298.78-4,172.04

Finding the Fourth Proportional to 13,531.23, 20,298.78 and 4,172.04

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Solution

The fourth proportional to 13,531.23, 20,298.78 and 4,172.04 is: 6,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.23 : 20,298.78 = 4,172.04 : x
  2. Step 2: Convert to fraction form
    13,531.23/20,298.78 = 4,172.04/x
  3. Step 3: Cross multiply
    13,531.23x = 20,298.78 × 4,172.04
  4. Step 4: Simplify right side
    13,531.23x = 84,687,322.11
  5. Step 5: Solve for x
    x = 84,687,322.11/13,531.23
  6. Step 6: Final answer
    x = 6,258.66

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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.