Home / 12,882,557.20-17,777,729.64-7,081,214.80

Finding the Fourth Proportional to 12,882,557.20, 17,777,729.64 and 7,081,214.80

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Solution

The fourth proportional to 12,882,557.20, 17,777,729.64 and 7,081,214.80 is: 9,771,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882,557.20 : 17,777,729.64 = 7,081,214.80 : x
  2. Step 2: Convert to fraction form
    12,882,557.20/17,777,729.64 = 7,081,214.80/x
  3. Step 3: Cross multiply
    12,882,557.20x = 17,777,729.64 × 7,081,214.80
  4. Step 4: Simplify right side
    12,882,557.20x = 125,887,922,237,166.67
  5. Step 5: Solve for x
    x = 125,887,922,237,166.67/12,882,557.20
  6. Step 6: Final answer
    x = 9,771,966.88

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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.