Home / 18,065,947.12-27,099,965.42-5,111,012.57

Finding the Fourth Proportional to 18,065,947.12, 27,099,965.42 and 5,111,012.57

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Solution

The fourth proportional to 18,065,947.12, 27,099,965.42 and 5,111,012.57 is: 7,666,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065,947.12 : 27,099,965.42 = 5,111,012.57 : x
  2. Step 2: Convert to fraction form
    18,065,947.12/27,099,965.42 = 5,111,012.57/x
  3. Step 3: Cross multiply
    18,065,947.12x = 27,099,965.42 × 5,111,012.57
  4. Step 4: Simplify right side
    18,065,947.12x = 138,508,263,747,130.45
  5. Step 5: Solve for x
    x = 138,508,263,747,130.45/18,065,947.12
  6. Step 6: Final answer
    x = 7,666,814.41

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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.