Home / 12,974.42-19,390.54-9,471.80

Finding the Fourth Proportional to 12,974.42, 19,390.54 and 9,471.80

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Solution

The fourth proportional to 12,974.42, 19,390.54 and 9,471.80 is: 14,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.42 : 19,390.54 = 9,471.80 : x
  2. Step 2: Convert to fraction form
    12,974.42/19,390.54 = 9,471.80/x
  3. Step 3: Cross multiply
    12,974.42x = 19,390.54 × 9,471.80
  4. Step 4: Simplify right side
    12,974.42x = 183,663,359.33
  5. Step 5: Solve for x
    x = 183,663,359.33/12,974.42
  6. Step 6: Final answer
    x = 14,155.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.