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Finding the Fourth Proportional to 10,610.55, 15,977.48 and 7,856.73

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Solution

The fourth proportional to 10,610.55, 15,977.48 and 7,856.73 is: 11,830.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,610.55 : 15,977.48 = 7,856.73 : x
  2. Step 2: Convert to fraction form
    10,610.55/15,977.48 = 7,856.73/x
  3. Step 3: Cross multiply
    10,610.55x = 15,977.48 × 7,856.73
  4. Step 4: Simplify right side
    10,610.55x = 125,530,707.16
  5. Step 5: Solve for x
    x = 125,530,707.16/10,610.55
  6. Step 6: Final answer
    x = 11,830.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.