Home / 20,395.94-28,145.93-11,443.23

Finding the Fourth Proportional to 20,395.94, 28,145.93 and 11,443.23

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Solution

The fourth proportional to 20,395.94, 28,145.93 and 11,443.23 is: 15,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.94 : 28,145.93 = 11,443.23 : x
  2. Step 2: Convert to fraction form
    20,395.94/28,145.93 = 11,443.23/x
  3. Step 3: Cross multiply
    20,395.94x = 28,145.93 × 11,443.23
  4. Step 4: Simplify right side
    20,395.94x = 322,080,293.34
  5. Step 5: Solve for x
    x = 322,080,293.34/20,395.94
  6. Step 6: Final answer
    x = 15,791.40

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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.