Home / 38,380.82-52,962.75-21,152.40

Finding the Fourth Proportional to 38,380.82, 52,962.75 and 21,152.40

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Solution

The fourth proportional to 38,380.82, 52,962.75 and 21,152.40 is: 29,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,380.82 : 52,962.75 = 21,152.40 : x
  2. Step 2: Convert to fraction form
    38,380.82/52,962.75 = 21,152.40/x
  3. Step 3: Cross multiply
    38,380.82x = 52,962.75 × 21,152.40
  4. Step 4: Simplify right side
    38,380.82x = 1,120,289,273.10
  5. Step 5: Solve for x
    x = 1,120,289,273.10/38,380.82
  6. Step 6: Final answer
    x = 29,188.78

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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.