Home / 20,636,986.44-30,959,882.10-6,989,654.28

Finding the Fourth Proportional to 20,636,986.44, 30,959,882.10 and 6,989,654.28

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Solution

The fourth proportional to 20,636,986.44, 30,959,882.10 and 6,989,654.28 is: 10,485,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636,986.44 : 30,959,882.10 = 6,989,654.28 : x
  2. Step 2: Convert to fraction form
    20,636,986.44/30,959,882.10 = 6,989,654.28/x
  3. Step 3: Cross multiply
    20,636,986.44x = 30,959,882.10 × 6,989,654.28
  4. Step 4: Simplify right side
    20,636,986.44x = 216,398,872,428,560.41
  5. Step 5: Solve for x
    x = 216,398,872,428,560.41/20,636,986.44
  6. Step 6: Final answer
    x = 10,485,972.51

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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.