Home / 20,982,405.56-28,958,479.02-11,816,840.12

Finding the Fourth Proportional to 20,982,405.56, 28,958,479.02 and 11,816,840.12

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Solution

The fourth proportional to 20,982,405.56, 28,958,479.02 and 11,816,840.12 is: 16,308,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,405.56 : 28,958,479.02 = 11,816,840.12 : x
  2. Step 2: Convert to fraction form
    20,982,405.56/28,958,479.02 = 11,816,840.12/x
  3. Step 3: Cross multiply
    20,982,405.56x = 28,958,479.02 × 11,816,840.12
  4. Step 4: Simplify right side
    20,982,405.56x = 342,197,716,697,714.25
  5. Step 5: Solve for x
    x = 342,197,716,697,714.25/20,982,405.56
  6. Step 6: Final answer
    x = 16,308,793.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.