Home / 28,215.86-38,936.42-16,278.50

Finding the Fourth Proportional to 28,215.86, 38,936.42 and 16,278.50

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Solution

The fourth proportional to 28,215.86, 38,936.42 and 16,278.50 is: 22,463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.86 : 38,936.42 = 16,278.50 : x
  2. Step 2: Convert to fraction form
    28,215.86/38,936.42 = 16,278.50/x
  3. Step 3: Cross multiply
    28,215.86x = 38,936.42 × 16,278.50
  4. Step 4: Simplify right side
    28,215.86x = 633,826,512.97
  5. Step 5: Solve for x
    x = 633,826,512.97/28,215.86
  6. Step 6: Final answer
    x = 22,463.48

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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.