Home / 20,661.36-28,468.44-18,124.08

Finding the Fourth Proportional to 20,661.36, 28,468.44 and 18,124.08

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Solution

The fourth proportional to 20,661.36, 28,468.44 and 18,124.08 is: 24,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.36 : 28,468.44 = 18,124.08 : x
  2. Step 2: Convert to fraction form
    20,661.36/28,468.44 = 18,124.08/x
  3. Step 3: Cross multiply
    20,661.36x = 28,468.44 × 18,124.08
  4. Step 4: Simplify right side
    20,661.36x = 515,964,284.04
  5. Step 5: Solve for x
    x = 515,964,284.04/20,661.36
  6. Step 6: Final answer
    x = 24,972.43

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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.