Home / 39,654.12-54,723.87-21,750.15

Finding the Fourth Proportional to 39,654.12, 54,723.87 and 21,750.15

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Solution

The fourth proportional to 39,654.12, 54,723.87 and 21,750.15 is: 30,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,654.12 : 54,723.87 = 21,750.15 : x
  2. Step 2: Convert to fraction form
    39,654.12/54,723.87 = 21,750.15/x
  3. Step 3: Cross multiply
    39,654.12x = 54,723.87 × 21,750.15
  4. Step 4: Simplify right side
    39,654.12x = 1,190,252,381.08
  5. Step 5: Solve for x
    x = 1,190,252,381.08/39,654.12
  6. Step 6: Final answer
    x = 30,015.86

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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.