Home / 20,426.22-28,187.44-11,352.15

Finding the Fourth Proportional to 20,426.22, 28,187.44 and 11,352.15

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Solution

The fourth proportional to 20,426.22, 28,187.44 and 11,352.15 is: 15,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.22 : 28,187.44 = 11,352.15 : x
  2. Step 2: Convert to fraction form
    20,426.22/28,187.44 = 11,352.15/x
  3. Step 3: Cross multiply
    20,426.22x = 28,187.44 × 11,352.15
  4. Step 4: Simplify right side
    20,426.22x = 319,988,135.74
  5. Step 5: Solve for x
    x = 319,988,135.74/20,426.22
  6. Step 6: Final answer
    x = 15,665.55

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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.