Home / 21,961.60-32,938.65-7,918.83

Finding the Fourth Proportional to 21,961.60, 32,938.65 and 7,918.83

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Solution

The fourth proportional to 21,961.60, 32,938.65 and 7,918.83 is: 11,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.60 : 32,938.65 = 7,918.83 : x
  2. Step 2: Convert to fraction form
    21,961.60/32,938.65 = 7,918.83/x
  3. Step 3: Cross multiply
    21,961.60x = 32,938.65 × 7,918.83
  4. Step 4: Simplify right side
    21,961.60x = 260,835,569.78
  5. Step 5: Solve for x
    x = 260,835,569.78/21,961.60
  6. Step 6: Final answer
    x = 11,876.89

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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.