Home / 28,238.90-38,947.92-20,682.52

Finding the Fourth Proportional to 28,238.90, 38,947.92 and 20,682.52

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Solution

The fourth proportional to 28,238.90, 38,947.92 and 20,682.52 is: 28,525.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.90 : 38,947.92 = 20,682.52 : x
  2. Step 2: Convert to fraction form
    28,238.90/38,947.92 = 20,682.52/x
  3. Step 3: Cross multiply
    28,238.90x = 38,947.92 × 20,682.52
  4. Step 4: Simplify right side
    28,238.90x = 805,541,134.36
  5. Step 5: Solve for x
    x = 805,541,134.36/28,238.90
  6. Step 6: Final answer
    x = 28,525.94

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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.