Home / 20,725.64-28,601.32-11,294.20

Finding the Fourth Proportional to 20,725.64, 28,601.32 and 11,294.20

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Solution

The fourth proportional to 20,725.64, 28,601.32 and 11,294.20 is: 15,585.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.64 : 28,601.32 = 11,294.20 : x
  2. Step 2: Convert to fraction form
    20,725.64/28,601.32 = 11,294.20/x
  3. Step 3: Cross multiply
    20,725.64x = 28,601.32 × 11,294.20
  4. Step 4: Simplify right side
    20,725.64x = 323,029,028.34
  5. Step 5: Solve for x
    x = 323,029,028.34/20,725.64
  6. Step 6: Final answer
    x = 15,585.96

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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.