Home / 28,235.18-38,963.22-15,659.66

Finding the Fourth Proportional to 28,235.18, 38,963.22 and 15,659.66

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Solution

The fourth proportional to 28,235.18, 38,963.22 and 15,659.66 is: 21,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.18 : 38,963.22 = 15,659.66 : x
  2. Step 2: Convert to fraction form
    28,235.18/38,963.22 = 15,659.66/x
  3. Step 3: Cross multiply
    28,235.18x = 38,963.22 × 15,659.66
  4. Step 4: Simplify right side
    28,235.18x = 610,150,777.71
  5. Step 5: Solve for x
    x = 610,150,777.71/28,235.18
  6. Step 6: Final answer
    x = 21,609.59

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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.