Home / 39,481.52-54,488.32-21,579.28

Finding the Fourth Proportional to 39,481.52, 54,488.32 and 21,579.28

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Solution

The fourth proportional to 39,481.52, 54,488.32 and 21,579.28 is: 29,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,481.52 : 54,488.32 = 21,579.28 : x
  2. Step 2: Convert to fraction form
    39,481.52/54,488.32 = 21,579.28/x
  3. Step 3: Cross multiply
    39,481.52x = 54,488.32 × 21,579.28
  4. Step 4: Simplify right side
    39,481.52x = 1,175,818,714.01
  5. Step 5: Solve for x
    x = 1,175,818,714.01/39,481.52
  6. Step 6: Final answer
    x = 29,781.50

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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.