Home / 57,947.88-86,929.11-20,499.15

Finding the Fourth Proportional to 57,947.88, 86,929.11 and 20,499.15

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Solution

The fourth proportional to 57,947.88, 86,929.11 and 20,499.15 is: 30,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,947.88 : 86,929.11 = 20,499.15 : x
  2. Step 2: Convert to fraction form
    57,947.88/86,929.11 = 20,499.15/x
  3. Step 3: Cross multiply
    57,947.88x = 86,929.11 × 20,499.15
  4. Step 4: Simplify right side
    57,947.88x = 1,781,972,865.26
  5. Step 5: Solve for x
    x = 1,781,972,865.26/57,947.88
  6. Step 6: Final answer
    x = 30,751.30

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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.