Home / 10,140.46-13,993.79-5,664.20

Finding the Fourth Proportional to 10,140.46, 13,993.79 and 5,664.20

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Solution

The fourth proportional to 10,140.46, 13,993.79 and 5,664.20 is: 7,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.46 : 13,993.79 = 5,664.20 : x
  2. Step 2: Convert to fraction form
    10,140.46/13,993.79 = 5,664.20/x
  3. Step 3: Cross multiply
    10,140.46x = 13,993.79 × 5,664.20
  4. Step 4: Simplify right side
    10,140.46x = 79,263,527.03
  5. Step 5: Solve for x
    x = 79,263,527.03/10,140.46
  6. Step 6: Final answer
    x = 7,816.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.