Home / 21,028,470.40-31,542,705.60-9,061,206.40

Finding the Fourth Proportional to 21,028,470.40, 31,542,705.60 and 9,061,206.40

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Solution

The fourth proportional to 21,028,470.40, 31,542,705.60 and 9,061,206.40 is: 13,591,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028,470.40 : 31,542,705.60 = 9,061,206.40 : x
  2. Step 2: Convert to fraction form
    21,028,470.40/31,542,705.60 = 9,061,206.40/x
  3. Step 3: Cross multiply
    21,028,470.40x = 31,542,705.60 × 9,061,206.40
  4. Step 4: Simplify right side
    21,028,470.40x = 285,814,965,856,035.88
  5. Step 5: Solve for x
    x = 285,814,965,856,035.88/21,028,470.40
  6. Step 6: Final answer
    x = 13,591,809.60

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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.