Home / 20,928,110.40-31,392,165.60-18,091,425.60

Finding the Fourth Proportional to 20,928,110.40, 31,392,165.60 and 18,091,425.60

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Solution

The fourth proportional to 20,928,110.40, 31,392,165.60 and 18,091,425.60 is: 27,137,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928,110.40 : 31,392,165.60 = 18,091,425.60 : x
  2. Step 2: Convert to fraction form
    20,928,110.40/31,392,165.60 = 18,091,425.60/x
  3. Step 3: Cross multiply
    20,928,110.40x = 31,392,165.60 × 18,091,425.60
  4. Step 4: Simplify right side
    20,928,110.40x = 567,929,028,375,279.38
  5. Step 5: Solve for x
    x = 567,929,028,375,279.38/20,928,110.40
  6. Step 6: Final answer
    x = 27,137,138.40

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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.