Home / 20,681,351.70-31,022,027.56-18,889,761.30

Finding the Fourth Proportional to 20,681,351.70, 31,022,027.56 and 18,889,761.30

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Solution

The fourth proportional to 20,681,351.70, 31,022,027.56 and 18,889,761.30 is: 28,334,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,351.70 : 31,022,027.56 = 18,889,761.30 : x
  2. Step 2: Convert to fraction form
    20,681,351.70/31,022,027.56 = 18,889,761.30/x
  3. Step 3: Cross multiply
    20,681,351.70x = 31,022,027.56 × 18,889,761.30
  4. Step 4: Simplify right side
    20,681,351.70x = 585,998,695,650,421.38
  5. Step 5: Solve for x
    x = 585,998,695,650,421.38/20,681,351.70
  6. Step 6: Final answer
    x = 28,334,641.96

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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.