Home / 21,260,356.80-31,890,535.20-7,795,435.20

Finding the Fourth Proportional to 21,260,356.80, 31,890,535.20 and 7,795,435.20

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Solution

The fourth proportional to 21,260,356.80, 31,890,535.20 and 7,795,435.20 is: 11,693,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260,356.80 : 31,890,535.20 = 7,795,435.20 : x
  2. Step 2: Convert to fraction form
    21,260,356.80/31,890,535.20 = 7,795,435.20/x
  3. Step 3: Cross multiply
    21,260,356.80x = 31,890,535.20 × 7,795,435.20
  4. Step 4: Simplify right side
    21,260,356.80x = 248,600,600,644,919.03
  5. Step 5: Solve for x
    x = 248,600,600,644,919.03/21,260,356.80
  6. Step 6: Final answer
    x = 11,693,152.80

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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.