Home / 18,974.25-28,461.38-5,123.25

Finding the Fourth Proportional to 18,974.25, 28,461.38 and 5,123.25

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Solution

The fourth proportional to 18,974.25, 28,461.38 and 5,123.25 is: 7,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.25 : 28,461.38 = 5,123.25 : x
  2. Step 2: Convert to fraction form
    18,974.25/28,461.38 = 5,123.25/x
  3. Step 3: Cross multiply
    18,974.25x = 28,461.38 × 5,123.25
  4. Step 4: Simplify right side
    18,974.25x = 145,814,739.47
  5. Step 5: Solve for x
    x = 145,814,739.47/18,974.25
  6. Step 6: Final answer
    x = 7,684.88

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1.5x scale

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.