Home / 39,679.50-59,534.25-20,958.78

Finding the Fourth Proportional to 39,679.50, 59,534.25 and 20,958.78

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Solution

The fourth proportional to 39,679.50, 59,534.25 and 20,958.78 is: 31,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.50 : 59,534.25 = 20,958.78 : x
  2. Step 2: Convert to fraction form
    39,679.50/59,534.25 = 20,958.78/x
  3. Step 3: Cross multiply
    39,679.50x = 59,534.25 × 20,958.78
  4. Step 4: Simplify right side
    39,679.50x = 1,247,765,248.22
  5. Step 5: Solve for x
    x = 1,247,765,248.22/39,679.50
  6. Step 6: Final answer
    x = 31,446.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.