Home / 20,072.47-27,704.61-13,358.38

Finding the Fourth Proportional to 20,072.47, 27,704.61 and 13,358.38

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Solution

The fourth proportional to 20,072.47, 27,704.61 and 13,358.38 is: 18,437.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.47 : 27,704.61 = 13,358.38 : x
  2. Step 2: Convert to fraction form
    20,072.47/27,704.61 = 13,358.38/x
  3. Step 3: Cross multiply
    20,072.47x = 27,704.61 × 13,358.38
  4. Step 4: Simplify right side
    20,072.47x = 370,088,708.13
  5. Step 5: Solve for x
    x = 370,088,708.13/20,072.47
  6. Step 6: Final answer
    x = 18,437.63

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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.