Home / 38,581.77-57,878.20-11,929.84

Finding the Fourth Proportional to 38,581.77, 57,878.20 and 11,929.84

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Solution

The fourth proportional to 38,581.77, 57,878.20 and 11,929.84 is: 17,896.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,581.77 : 57,878.20 = 11,929.84 : x
  2. Step 2: Convert to fraction form
    38,581.77/57,878.20 = 11,929.84/x
  3. Step 3: Cross multiply
    38,581.77x = 57,878.20 × 11,929.84
  4. Step 4: Simplify right side
    38,581.77x = 690,477,490.97
  5. Step 5: Solve for x
    x = 690,477,490.97/38,581.77
  6. Step 6: Final answer
    x = 17,896.47

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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.