Home / 15,163.70-20,925.60-8,449.31

Finding the Fourth Proportional to 15,163.70, 20,925.60 and 8,449.31

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Solution

The fourth proportional to 15,163.70, 20,925.60 and 8,449.31 is: 11,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.70 : 20,925.60 = 8,449.31 : x
  2. Step 2: Convert to fraction form
    15,163.70/20,925.60 = 8,449.31/x
  3. Step 3: Cross multiply
    15,163.70x = 20,925.60 × 8,449.31
  4. Step 4: Simplify right side
    15,163.70x = 176,806,881.34
  5. Step 5: Solve for x
    x = 176,806,881.34/15,163.70
  6. Step 6: Final answer
    x = 11,659.88

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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.