Home / 20,531.28-30,795.38-5,741.36

Finding the Fourth Proportional to 20,531.28, 30,795.38 and 5,741.36

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Solution

The fourth proportional to 20,531.28, 30,795.38 and 5,741.36 is: 8,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.28 : 30,795.38 = 5,741.36 : x
  2. Step 2: Convert to fraction form
    20,531.28/30,795.38 = 5,741.36/x
  3. Step 3: Cross multiply
    20,531.28x = 30,795.38 × 5,741.36
  4. Step 4: Simplify right side
    20,531.28x = 176,807,223.29
  5. Step 5: Solve for x
    x = 176,807,223.29/20,531.28
  6. Step 6: Final answer
    x = 8,611.60

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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.