Home / 20,943.17-28,902.09-11,511.73

Finding the Fourth Proportional to 20,943.17, 28,902.09 and 11,511.73

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Solution

The fourth proportional to 20,943.17, 28,902.09 and 11,511.73 is: 15,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.17 : 28,902.09 = 11,511.73 : x
  2. Step 2: Convert to fraction form
    20,943.17/28,902.09 = 11,511.73/x
  3. Step 3: Cross multiply
    20,943.17x = 28,902.09 × 11,511.73
  4. Step 4: Simplify right side
    20,943.17x = 332,713,056.52
  5. Step 5: Solve for x
    x = 332,713,056.52/20,943.17
  6. Step 6: Final answer
    x = 15,886.47

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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.