Home / 20,725.62-28,600.38-11,293.98

Finding the Fourth Proportional to 20,725.62, 28,600.38 and 11,293.98

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Solution

The fourth proportional to 20,725.62, 28,600.38 and 11,293.98 is: 15,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.62 : 28,600.38 = 11,293.98 : x
  2. Step 2: Convert to fraction form
    20,725.62/28,600.38 = 11,293.98/x
  3. Step 3: Cross multiply
    20,725.62x = 28,600.38 × 11,293.98
  4. Step 4: Simplify right side
    20,725.62x = 323,012,119.71
  5. Step 5: Solve for x
    x = 323,012,119.71/20,725.62
  6. Step 6: Final answer
    x = 15,585.16

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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.