Home / 39,666.41-54,743.19-21,764.90

Finding the Fourth Proportional to 39,666.41, 54,743.19 and 21,764.90

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Solution

The fourth proportional to 39,666.41, 54,743.19 and 21,764.90 is: 30,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,666.41 : 54,743.19 = 21,764.90 : x
  2. Step 2: Convert to fraction form
    39,666.41/54,743.19 = 21,764.90/x
  3. Step 3: Cross multiply
    39,666.41x = 54,743.19 × 21,764.90
  4. Step 4: Simplify right side
    39,666.41x = 1,191,480,233.70
  5. Step 5: Solve for x
    x = 1,191,480,233.70/39,666.41
  6. Step 6: Final answer
    x = 30,037.51

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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.