Home / 13,768.74-20,635.79-7,515.72

Finding the Fourth Proportional to 13,768.74, 20,635.79 and 7,515.72

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Solution

The fourth proportional to 13,768.74, 20,635.79 and 7,515.72 is: 11,264.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.74 : 20,635.79 = 7,515.72 : x
  2. Step 2: Convert to fraction form
    13,768.74/20,635.79 = 7,515.72/x
  3. Step 3: Cross multiply
    13,768.74x = 20,635.79 × 7,515.72
  4. Step 4: Simplify right side
    13,768.74x = 155,092,782.04
  5. Step 5: Solve for x
    x = 155,092,782.04/13,768.74
  6. Step 6: Final answer
    x = 11,264.12

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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.