Home / 20,231,412.60-27,912,975.42-12,382,742.69

Finding the Fourth Proportional to 20,231,412.60, 27,912,975.42 and 12,382,742.69

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Solution

The fourth proportional to 20,231,412.60, 27,912,975.42 and 12,382,742.69 is: 17,084,283.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231,412.60 : 27,912,975.42 = 12,382,742.69 : x
  2. Step 2: Convert to fraction form
    20,231,412.60/27,912,975.42 = 12,382,742.69/x
  3. Step 3: Cross multiply
    20,231,412.60x = 27,912,975.42 × 12,382,742.69
  4. Step 4: Simplify right side
    20,231,412.60x = 345,639,192,437,056.31
  5. Step 5: Solve for x
    x = 345,639,192,437,056.31/20,231,412.60
  6. Step 6: Final answer
    x = 17,084,283.69

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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.