Home / 12,921,706.80-17,832,075-7,120,696.14

Finding the Fourth Proportional to 12,921,706.80, 17,832,075 and 7,120,696.14

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Solution

The fourth proportional to 12,921,706.80, 17,832,075 and 7,120,696.14 is: 9,826,626.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,706.80 : 17,832,075 = 7,120,696.14 : x
  2. Step 2: Convert to fraction form
    12,921,706.80/17,832,075 = 7,120,696.14/x
  3. Step 3: Cross multiply
    12,921,706.80x = 17,832,075 × 7,120,696.14
  4. Step 4: Simplify right side
    12,921,706.80x = 126,976,787,620,690.50
  5. Step 5: Solve for x
    x = 126,976,787,620,690.50/12,921,706.80
  6. Step 6: Final answer
    x = 9,826,626.59

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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.