Home / 13,806.90-20,711.70-5,039.79

Finding the Fourth Proportional to 13,806.90, 20,711.70 and 5,039.79

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Solution

The fourth proportional to 13,806.90, 20,711.70 and 5,039.79 is: 7,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.90 : 20,711.70 = 5,039.79 : x
  2. Step 2: Convert to fraction form
    13,806.90/20,711.70 = 5,039.79/x
  3. Step 3: Cross multiply
    13,806.90x = 20,711.70 × 5,039.79
  4. Step 4: Simplify right side
    13,806.90x = 104,382,618.54
  5. Step 5: Solve for x
    x = 104,382,618.54/13,806.90
  6. Step 6: Final answer
    x = 7,560.18

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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.