Home / 13,799.13-20,701.92-3,938.55

Finding the Fourth Proportional to 13,799.13, 20,701.92 and 3,938.55

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Solution

The fourth proportional to 13,799.13, 20,701.92 and 3,938.55 is: 5,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.13 : 20,701.92 = 3,938.55 : x
  2. Step 2: Convert to fraction form
    13,799.13/20,701.92 = 3,938.55/x
  3. Step 3: Cross multiply
    13,799.13x = 20,701.92 × 3,938.55
  4. Step 4: Simplify right side
    13,799.13x = 81,535,547.02
  5. Step 5: Solve for x
    x = 81,535,547.02/13,799.13
  6. Step 6: Final answer
    x = 5,908.75

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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.