Home / 20,648.08-28,493.94-11,216.71

Finding the Fourth Proportional to 20,648.08, 28,493.94 and 11,216.71

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Solution

The fourth proportional to 20,648.08, 28,493.94 and 11,216.71 is: 15,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.08 : 28,493.94 = 11,216.71 : x
  2. Step 2: Convert to fraction form
    20,648.08/28,493.94 = 11,216.71/x
  3. Step 3: Cross multiply
    20,648.08x = 28,493.94 × 11,216.71
  4. Step 4: Simplify right side
    20,648.08x = 319,608,261.74
  5. Step 5: Solve for x
    x = 319,608,261.74/20,648.08
  6. Step 6: Final answer
    x = 15,478.84

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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.