Home / 20,438.97-28,204.15-11,484.79

Finding the Fourth Proportional to 20,438.97, 28,204.15 and 11,484.79

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Solution

The fourth proportional to 20,438.97, 28,204.15 and 11,484.79 is: 15,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.97 : 28,204.15 = 11,484.79 : x
  2. Step 2: Convert to fraction form
    20,438.97/28,204.15 = 11,484.79/x
  3. Step 3: Cross multiply
    20,438.97x = 28,204.15 × 11,484.79
  4. Step 4: Simplify right side
    20,438.97x = 323,918,739.88
  5. Step 5: Solve for x
    x = 323,918,739.88/20,438.97
  6. Step 6: Final answer
    x = 15,848.10

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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.