Home / 28,725.90-39,641.22-15,979.02

Finding the Fourth Proportional to 28,725.90, 39,641.22 and 15,979.02

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Solution

The fourth proportional to 28,725.90, 39,641.22 and 15,979.02 is: 22,050.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.90 : 39,641.22 = 15,979.02 : x
  2. Step 2: Convert to fraction form
    28,725.90/39,641.22 = 15,979.02/x
  3. Step 3: Cross multiply
    28,725.90x = 39,641.22 × 15,979.02
  4. Step 4: Simplify right side
    28,725.90x = 633,427,847.20
  5. Step 5: Solve for x
    x = 633,427,847.20/28,725.90
  6. Step 6: Final answer
    x = 22,050.76

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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.