Home / 39,245.85-54,156.96-21,340.71

Finding the Fourth Proportional to 39,245.85, 54,156.96 and 21,340.71

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Solution

The fourth proportional to 39,245.85, 54,156.96 and 21,340.71 is: 29,448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,245.85 : 54,156.96 = 21,340.71 : x
  2. Step 2: Convert to fraction form
    39,245.85/54,156.96 = 21,340.71/x
  3. Step 3: Cross multiply
    39,245.85x = 54,156.96 × 21,340.71
  4. Step 4: Simplify right side
    39,245.85x = 1,155,747,977.84
  5. Step 5: Solve for x
    x = 1,155,747,977.84/39,245.85
  6. Step 6: Final answer
    x = 29,448.92

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Double scale
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1.5x scale

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.