Home / 11,528.92-15,876.42-10,015.78

Finding the Fourth Proportional to 11,528.92, 15,876.42 and 10,015.78

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Solution

The fourth proportional to 11,528.92, 15,876.42 and 10,015.78 is: 13,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,528.92 : 15,876.42 = 10,015.78 : x
  2. Step 2: Convert to fraction form
    11,528.92/15,876.42 = 10,015.78/x
  3. Step 3: Cross multiply
    11,528.92x = 15,876.42 × 10,015.78
  4. Step 4: Simplify right side
    11,528.92x = 159,014,729.91
  5. Step 5: Solve for x
    x = 159,014,729.91/11,528.92
  6. Step 6: Final answer
    x = 13,792.68

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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.