Home / 39,758.81-54,866.16-21,608.96

Finding the Fourth Proportional to 39,758.81, 54,866.16 and 21,608.96

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Solution

The fourth proportional to 39,758.81, 54,866.16 and 21,608.96 is: 29,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.81 : 54,866.16 = 21,608.96 : x
  2. Step 2: Convert to fraction form
    39,758.81/54,866.16 = 21,608.96/x
  3. Step 3: Cross multiply
    39,758.81x = 54,866.16 × 21,608.96
  4. Step 4: Simplify right side
    39,758.81x = 1,185,600,382.46
  5. Step 5: Solve for x
    x = 1,185,600,382.46/39,758.81
  6. Step 6: Final answer
    x = 29,819.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.