Home / 20,725.49-28,600.28-11,772.97

Finding the Fourth Proportional to 20,725.49, 28,600.28 and 11,772.97

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Solution

The fourth proportional to 20,725.49, 28,600.28 and 11,772.97 is: 16,246.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.49 : 28,600.28 = 11,772.97 : x
  2. Step 2: Convert to fraction form
    20,725.49/28,600.28 = 11,772.97/x
  3. Step 3: Cross multiply
    20,725.49x = 28,600.28 × 11,772.97
  4. Step 4: Simplify right side
    20,725.49x = 336,710,238.43
  5. Step 5: Solve for x
    x = 336,710,238.43/20,725.49
  6. Step 6: Final answer
    x = 16,246.19

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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.