Home / 15,128.57-22,680.56-11,856.27

Finding the Fourth Proportional to 15,128.57, 22,680.56 and 11,856.27

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Solution

The fourth proportional to 15,128.57, 22,680.56 and 11,856.27 is: 17,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.57 : 22,680.56 = 11,856.27 : x
  2. Step 2: Convert to fraction form
    15,128.57/22,680.56 = 11,856.27/x
  3. Step 3: Cross multiply
    15,128.57x = 22,680.56 × 11,856.27
  4. Step 4: Simplify right side
    15,128.57x = 268,906,891.11
  5. Step 5: Solve for x
    x = 268,906,891.11/15,128.57
  6. Step 6: Final answer
    x = 17,774.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.