Home / 28,471.82-39,290.76-15,725.52

Finding the Fourth Proportional to 28,471.82, 39,290.76 and 15,725.52

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Solution

The fourth proportional to 28,471.82, 39,290.76 and 15,725.52 is: 21,701.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.82 : 39,290.76 = 15,725.52 : x
  2. Step 2: Convert to fraction form
    28,471.82/39,290.76 = 15,725.52/x
  3. Step 3: Cross multiply
    28,471.82x = 39,290.76 × 15,725.52
  4. Step 4: Simplify right side
    28,471.82x = 617,867,632.20
  5. Step 5: Solve for x
    x = 617,867,632.20/28,471.82
  6. Step 6: Final answer
    x = 21,701.03

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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.