Home / 39,456.68-54,451.40-21,552.64

Finding the Fourth Proportional to 39,456.68, 54,451.40 and 21,552.64

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Solution

The fourth proportional to 39,456.68, 54,451.40 and 21,552.64 is: 29,743.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,456.68 : 54,451.40 = 21,552.64 : x
  2. Step 2: Convert to fraction form
    39,456.68/54,451.40 = 21,552.64/x
  3. Step 3: Cross multiply
    39,456.68x = 54,451.40 × 21,552.64
  4. Step 4: Simplify right side
    39,456.68x = 1,173,571,421.70
  5. Step 5: Solve for x
    x = 1,173,571,421.70/39,456.68
  6. Step 6: Final answer
    x = 29,743.29

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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.