Home / 13,067,639.49-18,033,857.01-7,187,820.75

Finding the Fourth Proportional to 13,067,639.49, 18,033,857.01 and 7,187,820.75

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Solution

The fourth proportional to 13,067,639.49, 18,033,857.01 and 7,187,820.75 is: 9,919,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,067,639.49 : 18,033,857.01 = 7,187,820.75 : x
  2. Step 2: Convert to fraction form
    13,067,639.49/18,033,857.01 = 7,187,820.75/x
  3. Step 3: Cross multiply
    13,067,639.49x = 18,033,857.01 × 7,187,820.75
  4. Step 4: Simplify right side
    13,067,639.49x = 129,624,131,619,010.97
  5. Step 5: Solve for x
    x = 129,624,131,619,010.97/13,067,639.49
  6. Step 6: Final answer
    x = 9,919,475.64

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1.5x scale

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.