Home / 20,448.62-30,660.53-13,338.17

Finding the Fourth Proportional to 20,448.62, 30,660.53 and 13,338.17

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Solution

The fourth proportional to 20,448.62, 30,660.53 and 13,338.17 is: 19,999.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.62 : 30,660.53 = 13,338.17 : x
  2. Step 2: Convert to fraction form
    20,448.62/30,660.53 = 13,338.17/x
  3. Step 3: Cross multiply
    20,448.62x = 30,660.53 × 13,338.17
  4. Step 4: Simplify right side
    20,448.62x = 408,955,208.13
  5. Step 5: Solve for x
    x = 408,955,208.13/20,448.62
  6. Step 6: Final answer
    x = 19,999.16

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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.