Home / 28,081.71-38,753.24-15,335.55

Finding the Fourth Proportional to 28,081.71, 38,753.24 and 15,335.55

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Solution

The fourth proportional to 28,081.71, 38,753.24 and 15,335.55 is: 21,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.71 : 38,753.24 = 15,335.55 : x
  2. Step 2: Convert to fraction form
    28,081.71/38,753.24 = 15,335.55/x
  3. Step 3: Cross multiply
    28,081.71x = 38,753.24 × 15,335.55
  4. Step 4: Simplify right side
    28,081.71x = 594,302,173.00
  5. Step 5: Solve for x
    x = 594,302,173.00/28,081.71
  6. Step 6: Final answer
    x = 21,163.32

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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.