Home / 28,659.24-39,549.90-15,912.88

Finding the Fourth Proportional to 28,659.24, 39,549.90 and 15,912.88

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Solution

The fourth proportional to 28,659.24, 39,549.90 and 15,912.88 is: 21,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.24 : 39,549.90 = 15,912.88 : x
  2. Step 2: Convert to fraction form
    28,659.24/39,549.90 = 15,912.88/x
  3. Step 3: Cross multiply
    28,659.24x = 39,549.90 × 15,912.88
  4. Step 4: Simplify right side
    28,659.24x = 629,352,812.71
  5. Step 5: Solve for x
    x = 629,352,812.71/28,659.24
  6. Step 6: Final answer
    x = 21,959.86

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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.