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Finding the Fourth Proportional to 55,217.40, 82,826.82 and 15,775.80

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Solution

The fourth proportional to 55,217.40, 82,826.82 and 15,775.80 is: 23,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,217.40 : 82,826.82 = 15,775.80 : x
  2. Step 2: Convert to fraction form
    55,217.40/82,826.82 = 15,775.80/x
  3. Step 3: Cross multiply
    55,217.40x = 82,826.82 × 15,775.80
  4. Step 4: Simplify right side
    55,217.40x = 1,306,659,346.96
  5. Step 5: Solve for x
    x = 1,306,659,346.96/55,217.40
  6. Step 6: Final answer
    x = 23,663.91

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1.5x scale

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.