Home / 12,390.14-18,574.26-9,481.43

Finding the Fourth Proportional to 12,390.14, 18,574.26 and 9,481.43

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Solution

The fourth proportional to 12,390.14, 18,574.26 and 9,481.43 is: 14,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.14 : 18,574.26 = 9,481.43 : x
  2. Step 2: Convert to fraction form
    12,390.14/18,574.26 = 9,481.43/x
  3. Step 3: Cross multiply
    12,390.14x = 18,574.26 × 9,481.43
  4. Step 4: Simplify right side
    12,390.14x = 176,110,545.99
  5. Step 5: Solve for x
    x = 176,110,545.99/12,390.14
  6. Step 6: Final answer
    x = 14,213.77

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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.