Home / 21,757.11-30,030.26-13,368.75

Finding the Fourth Proportional to 21,757.11, 30,030.26 and 13,368.75

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Solution

The fourth proportional to 21,757.11, 30,030.26 and 13,368.75 is: 18,452.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.11 : 30,030.26 = 13,368.75 : x
  2. Step 2: Convert to fraction form
    21,757.11/30,030.26 = 13,368.75/x
  3. Step 3: Cross multiply
    21,757.11x = 30,030.26 × 13,368.75
  4. Step 4: Simplify right side
    21,757.11x = 401,466,971.53
  5. Step 5: Solve for x
    x = 401,466,971.53/21,757.11
  6. Step 6: Final answer
    x = 18,452.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.