Home / 39,770.28-54,883.35-21,865.41

Finding the Fourth Proportional to 39,770.28, 54,883.35 and 21,865.41

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Solution

The fourth proportional to 39,770.28, 54,883.35 and 21,865.41 is: 30,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.28 : 54,883.35 = 21,865.41 : x
  2. Step 2: Convert to fraction form
    39,770.28/54,883.35 = 21,865.41/x
  3. Step 3: Cross multiply
    39,770.28x = 54,883.35 × 21,865.41
  4. Step 4: Simplify right side
    39,770.28x = 1,200,046,744.11
  5. Step 5: Solve for x
    x = 1,200,046,744.11/39,770.28
  6. Step 6: Final answer
    x = 30,174.46

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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.