Home / 12,581.19-18,876.24-7,039.31

Finding the Fourth Proportional to 12,581.19, 18,876.24 and 7,039.31

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Solution

The fourth proportional to 12,581.19, 18,876.24 and 7,039.31 is: 10,561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.19 : 18,876.24 = 7,039.31 : x
  2. Step 2: Convert to fraction form
    12,581.19/18,876.24 = 7,039.31/x
  3. Step 3: Cross multiply
    12,581.19x = 18,876.24 × 7,039.31
  4. Step 4: Simplify right side
    12,581.19x = 132,875,610.61
  5. Step 5: Solve for x
    x = 132,875,610.61/12,581.19
  6. Step 6: Final answer
    x = 10,561.45

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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.