Home / 28,585.15-42,877.75-11,936.11

Finding the Fourth Proportional to 28,585.15, 42,877.75 and 11,936.11

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Solution

The fourth proportional to 28,585.15, 42,877.75 and 11,936.11 is: 17,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.15 : 42,877.75 = 11,936.11 : x
  2. Step 2: Convert to fraction form
    28,585.15/42,877.75 = 11,936.11/x
  3. Step 3: Cross multiply
    28,585.15x = 42,877.75 × 11,936.11
  4. Step 4: Simplify right side
    28,585.15x = 511,793,540.55
  5. Step 5: Solve for x
    x = 511,793,540.55/28,585.15
  6. Step 6: Final answer
    x = 17,904.18

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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.