Home / 20,978,463.66-28,952,062.11-11,812,892.46

Finding the Fourth Proportional to 20,978,463.66, 28,952,062.11 and 11,812,892.46

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Solution

The fourth proportional to 20,978,463.66, 28,952,062.11 and 11,812,892.46 is: 16,302,795.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,978,463.66 : 28,952,062.11 = 11,812,892.46 : x
  2. Step 2: Convert to fraction form
    20,978,463.66/28,952,062.11 = 11,812,892.46/x
  3. Step 3: Cross multiply
    20,978,463.66x = 28,952,062.11 × 11,812,892.46
  4. Step 4: Simplify right side
    20,978,463.66x = 342,007,596,200,670.69
  5. Step 5: Solve for x
    x = 342,007,596,200,670.69/20,978,463.66
  6. Step 6: Final answer
    x = 16,302,795.18

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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.