Home / 13,519.80-20,265.36-7,975.76

Finding the Fourth Proportional to 13,519.80, 20,265.36 and 7,975.76

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Solution

The fourth proportional to 13,519.80, 20,265.36 and 7,975.76 is: 11,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.80 : 20,265.36 = 7,975.76 : x
  2. Step 2: Convert to fraction form
    13,519.80/20,265.36 = 7,975.76/x
  3. Step 3: Cross multiply
    13,519.80x = 20,265.36 × 7,975.76
  4. Step 4: Simplify right side
    13,519.80x = 161,631,647.67
  5. Step 5: Solve for x
    x = 161,631,647.67/13,519.80
  6. Step 6: Final answer
    x = 11,955.18

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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.