Home / 13,806.68-20,710.73-3,947.45

Finding the Fourth Proportional to 13,806.68, 20,710.73 and 3,947.45

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Solution

The fourth proportional to 13,806.68, 20,710.73 and 3,947.45 is: 5,921.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.68 : 20,710.73 = 3,947.45 : x
  2. Step 2: Convert to fraction form
    13,806.68/20,710.73 = 3,947.45/x
  3. Step 3: Cross multiply
    13,806.68x = 20,710.73 × 3,947.45
  4. Step 4: Simplify right side
    13,806.68x = 81,754,477.45
  5. Step 5: Solve for x
    x = 81,754,477.45/13,806.68
  6. Step 6: Final answer
    x = 5,921.37

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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.