Home / 19,947.60-29,863.80-12,171.60

Finding the Fourth Proportional to 19,947.60, 29,863.80 and 12,171.60

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Solution

The fourth proportional to 19,947.60, 29,863.80 and 12,171.60 is: 18,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.60 : 29,863.80 = 12,171.60 : x
  2. Step 2: Convert to fraction form
    19,947.60/29,863.80 = 12,171.60/x
  3. Step 3: Cross multiply
    19,947.60x = 29,863.80 × 12,171.60
  4. Step 4: Simplify right side
    19,947.60x = 363,490,228.08
  5. Step 5: Solve for x
    x = 363,490,228.08/19,947.60
  6. Step 6: Final answer
    x = 18,222.25

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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.