Home / 15,172.37-20,937.12-8,458.55

Finding the Fourth Proportional to 15,172.37, 20,937.12 and 8,458.55

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Solution

The fourth proportional to 15,172.37, 20,937.12 and 8,458.55 is: 11,672.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.37 : 20,937.12 = 8,458.55 : x
  2. Step 2: Convert to fraction form
    15,172.37/20,937.12 = 8,458.55/x
  3. Step 3: Cross multiply
    15,172.37x = 20,937.12 × 8,458.55
  4. Step 4: Simplify right side
    15,172.37x = 177,097,676.38
  5. Step 5: Solve for x
    x = 177,097,676.38/15,172.37
  6. Step 6: Final answer
    x = 11,672.38

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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.