Home / 21,330,607.30-29,427,862.24-12,388,195.15

Finding the Fourth Proportional to 21,330,607.30, 29,427,862.24 and 12,388,195.15

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Solution

The fourth proportional to 21,330,607.30, 29,427,862.24 and 12,388,195.15 is: 17,090,844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330,607.30 : 29,427,862.24 = 12,388,195.15 : x
  2. Step 2: Convert to fraction form
    21,330,607.30/29,427,862.24 = 12,388,195.15/x
  3. Step 3: Cross multiply
    21,330,607.30x = 29,427,862.24 × 12,388,195.15
  4. Step 4: Simplify right side
    21,330,607.30x = 364,558,100,218,351.75
  5. Step 5: Solve for x
    x = 364,558,100,218,351.75/21,330,607.30
  6. Step 6: Final answer
    x = 17,090,844.87

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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.