Home / 20,321,102.16-30,486,965.40-11,793,240.72

Finding the Fourth Proportional to 20,321,102.16, 30,486,965.40 and 11,793,240.72

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Solution

The fourth proportional to 20,321,102.16, 30,486,965.40 and 11,793,240.72 is: 17,692,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,102.16 : 30,486,965.40 = 11,793,240.72 : x
  2. Step 2: Convert to fraction form
    20,321,102.16/30,486,965.40 = 11,793,240.72/x
  3. Step 3: Cross multiply
    20,321,102.16x = 30,486,965.40 × 11,793,240.72
  4. Step 4: Simplify right side
    20,321,102.16x = 359,540,121,784,511.06
  5. Step 5: Solve for x
    x = 359,540,121,784,511.06/20,321,102.16
  6. Step 6: Final answer
    x = 17,692,943.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.