Home / 11,512.72-15,886.62-6,477.76

Finding the Fourth Proportional to 11,512.72, 15,886.62 and 6,477.76

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Solution

The fourth proportional to 11,512.72, 15,886.62 and 6,477.76 is: 8,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,512.72 : 15,886.62 = 6,477.76 : x
  2. Step 2: Convert to fraction form
    11,512.72/15,886.62 = 6,477.76/x
  3. Step 3: Cross multiply
    11,512.72x = 15,886.62 × 6,477.76
  4. Step 4: Simplify right side
    11,512.72x = 102,909,711.57
  5. Step 5: Solve for x
    x = 102,909,711.57/11,512.72
  6. Step 6: Final answer
    x = 8,938.78

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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.