Home / 9,921.60-13,690.92-5,671.82

Finding the Fourth Proportional to 9,921.60, 13,690.92 and 5,671.82

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Solution

The fourth proportional to 9,921.60, 13,690.92 and 5,671.82 is: 7,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.60 : 13,690.92 = 5,671.82 : x
  2. Step 2: Convert to fraction form
    9,921.60/13,690.92 = 5,671.82/x
  3. Step 3: Cross multiply
    9,921.60x = 13,690.92 × 5,671.82
  4. Step 4: Simplify right side
    9,921.60x = 77,652,433.87
  5. Step 5: Solve for x
    x = 77,652,433.87/9,921.60
  6. Step 6: Final answer
    x = 7,826.60

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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.