Home / 28,739.15-39,659.30-16,637.96

Finding the Fourth Proportional to 28,739.15, 39,659.30 and 16,637.96

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Solution

The fourth proportional to 28,739.15, 39,659.30 and 16,637.96 is: 22,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.15 : 39,659.30 = 16,637.96 : x
  2. Step 2: Convert to fraction form
    28,739.15/39,659.30 = 16,637.96/x
  3. Step 3: Cross multiply
    28,739.15x = 39,659.30 × 16,637.96
  4. Step 4: Simplify right side
    28,739.15x = 659,849,565.54
  5. Step 5: Solve for x
    x = 659,849,565.54/28,739.15
  6. Step 6: Final answer
    x = 22,959.95

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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.