Home / 15,172.28-20,937.81-8,458.02

Finding the Fourth Proportional to 15,172.28, 20,937.81 and 8,458.02

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Solution

The fourth proportional to 15,172.28, 20,937.81 and 8,458.02 is: 11,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.28 : 20,937.81 = 8,458.02 : x
  2. Step 2: Convert to fraction form
    15,172.28/20,937.81 = 8,458.02/x
  3. Step 3: Cross multiply
    15,172.28x = 20,937.81 × 8,458.02
  4. Step 4: Simplify right side
    15,172.28x = 177,092,415.74
  5. Step 5: Solve for x
    x = 177,092,415.74/15,172.28
  6. Step 6: Final answer
    x = 11,672.11

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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.