Home / 39,305.85-54,240.65-21,400.44

Finding the Fourth Proportional to 39,305.85, 54,240.65 and 21,400.44

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Solution

The fourth proportional to 39,305.85, 54,240.65 and 21,400.44 is: 29,531.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,305.85 : 54,240.65 = 21,400.44 : x
  2. Step 2: Convert to fraction form
    39,305.85/54,240.65 = 21,400.44/x
  3. Step 3: Cross multiply
    39,305.85x = 54,240.65 × 21,400.44
  4. Step 4: Simplify right side
    39,305.85x = 1,160,773,775.89
  5. Step 5: Solve for x
    x = 1,160,773,775.89/39,305.85
  6. Step 6: Final answer
    x = 29,531.83

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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.