Home / 20,774,213.94-31,161,955.73-7,127,168.88

Finding the Fourth Proportional to 20,774,213.94, 31,161,955.73 and 7,127,168.88

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Solution

The fourth proportional to 20,774,213.94, 31,161,955.73 and 7,127,168.88 is: 10,690,971.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774,213.94 : 31,161,955.73 = 7,127,168.88 : x
  2. Step 2: Convert to fraction form
    20,774,213.94/31,161,955.73 = 7,127,168.88/x
  3. Step 3: Cross multiply
    20,774,213.94x = 31,161,955.73 × 7,127,168.88
  4. Step 4: Simplify right side
    20,774,213.94x = 222,096,521,118,793.69
  5. Step 5: Solve for x
    x = 222,096,521,118,793.69/20,774,213.94
  6. Step 6: Final answer
    x = 10,690,971.11

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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.