Home / 13,515.88-20,269.98-5,195.32

Finding the Fourth Proportional to 13,515.88, 20,269.98 and 5,195.32

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Solution

The fourth proportional to 13,515.88, 20,269.98 and 5,195.32 is: 7,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.88 : 20,269.98 = 5,195.32 : x
  2. Step 2: Convert to fraction form
    13,515.88/20,269.98 = 5,195.32/x
  3. Step 3: Cross multiply
    13,515.88x = 20,269.98 × 5,195.32
  4. Step 4: Simplify right side
    13,515.88x = 105,309,032.49
  5. Step 5: Solve for x
    x = 105,309,032.49/13,515.88
  6. Step 6: Final answer
    x = 7,791.50

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1.5x scale

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.