Home / 39,654.77-54,725.11-21,750.53

Finding the Fourth Proportional to 39,654.77, 54,725.11 and 21,750.53

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Solution

The fourth proportional to 39,654.77, 54,725.11 and 21,750.53 is: 30,016.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,654.77 : 54,725.11 = 21,750.53 : x
  2. Step 2: Convert to fraction form
    39,654.77/54,725.11 = 21,750.53/x
  3. Step 3: Cross multiply
    39,654.77x = 54,725.11 × 21,750.53
  4. Step 4: Simplify right side
    39,654.77x = 1,190,299,818.81
  5. Step 5: Solve for x
    x = 1,190,299,818.81/39,654.77
  6. Step 6: Final answer
    x = 30,016.56

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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.