Home / 13,351.88-20,039.96-7,117.12

Finding the Fourth Proportional to 13,351.88, 20,039.96 and 7,117.12

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Solution

The fourth proportional to 13,351.88, 20,039.96 and 7,117.12 is: 10,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.88 : 20,039.96 = 7,117.12 : x
  2. Step 2: Convert to fraction form
    13,351.88/20,039.96 = 7,117.12/x
  3. Step 3: Cross multiply
    13,351.88x = 20,039.96 × 7,117.12
  4. Step 4: Simplify right side
    13,351.88x = 142,626,800.12
  5. Step 5: Solve for x
    x = 142,626,800.12/13,351.88
  6. Step 6: Final answer
    x = 10,682.15

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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.