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Finding the Fourth Proportional to 20,873,998.40, 31,261,231.20 and 20,873,998.40

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Solution

The fourth proportional to 20,873,998.40, 31,261,231.20 and 20,873,998.40 is: 31,261,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873,998.40 : 31,261,231.20 = 20,873,998.40 : x
  2. Step 2: Convert to fraction form
    20,873,998.40/31,261,231.20 = 20,873,998.40/x
  3. Step 3: Cross multiply
    20,873,998.40x = 31,261,231.20 × 20,873,998.40
  4. Step 4: Simplify right side
    20,873,998.40x = 652,546,890,050,830
  5. Step 5: Solve for x
    x = 652,546,890,050,830/20,873,998.40
  6. Step 6: Final answer
    x = 31,261,231.20

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1.5x scale

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.