Home / 11,862.12-17,781.66-4,938.60

Finding the Fourth Proportional to 11,862.12, 17,781.66 and 4,938.60

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Solution

The fourth proportional to 11,862.12, 17,781.66 and 4,938.60 is: 7,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.12 : 17,781.66 = 4,938.60 : x
  2. Step 2: Convert to fraction form
    11,862.12/17,781.66 = 4,938.60/x
  3. Step 3: Cross multiply
    11,862.12x = 17,781.66 × 4,938.60
  4. Step 4: Simplify right side
    11,862.12x = 87,816,506.08
  5. Step 5: Solve for x
    x = 87,816,506.08/11,862.12
  6. Step 6: Final answer
    x = 7,403.10

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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.