Home / 20,725.32-28,600.93-11,293.88

Finding the Fourth Proportional to 20,725.32, 28,600.93 and 11,293.88

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Solution

The fourth proportional to 20,725.32, 28,600.93 and 11,293.88 is: 15,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.32 : 28,600.93 = 11,293.88 : x
  2. Step 2: Convert to fraction form
    20,725.32/28,600.93 = 11,293.88/x
  3. Step 3: Cross multiply
    20,725.32x = 28,600.93 × 11,293.88
  4. Step 4: Simplify right side
    20,725.32x = 323,015,542.81
  5. Step 5: Solve for x
    x = 323,015,542.81/20,725.32
  6. Step 6: Final answer
    x = 15,585.55

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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.