Home / 12,840,841.36-17,719,977.12-7,039,424.80

Finding the Fourth Proportional to 12,840,841.36, 17,719,977.12 and 7,039,424.80

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Solution

The fourth proportional to 12,840,841.36, 17,719,977.12 and 7,039,424.80 is: 9,714,195.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840,841.36 : 17,719,977.12 = 7,039,424.80 : x
  2. Step 2: Convert to fraction form
    12,840,841.36/17,719,977.12 = 7,039,424.80/x
  3. Step 3: Cross multiply
    12,840,841.36x = 17,719,977.12 × 7,039,424.80
  4. Step 4: Simplify right side
    12,840,841.36x = 124,738,446,393,960.58
  5. Step 5: Solve for x
    x = 124,738,446,393,960.58/12,840,841.36
  6. Step 6: Final answer
    x = 9,714,195.74

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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.