Home / 28,257.31-38,995.20-15,682.06

Finding the Fourth Proportional to 28,257.31, 38,995.20 and 15,682.06

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Solution

The fourth proportional to 28,257.31, 38,995.20 and 15,682.06 is: 21,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.31 : 38,995.20 = 15,682.06 : x
  2. Step 2: Convert to fraction form
    28,257.31/38,995.20 = 15,682.06/x
  3. Step 3: Cross multiply
    28,257.31x = 38,995.20 × 15,682.06
  4. Step 4: Simplify right side
    28,257.31x = 611,524,987.70
  5. Step 5: Solve for x
    x = 611,524,987.70/28,257.31
  6. Step 6: Final answer
    x = 21,641.30

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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.