Home / 13,291,387.88-18,342,131.64-7,179,816.38

Finding the Fourth Proportional to 13,291,387.88, 18,342,131.64 and 7,179,816.38

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Solution

The fourth proportional to 13,291,387.88, 18,342,131.64 and 7,179,816.38 is: 9,908,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,387.88 : 18,342,131.64 = 7,179,816.38 : x
  2. Step 2: Convert to fraction form
    13,291,387.88/18,342,131.64 = 7,179,816.38/x
  3. Step 3: Cross multiply
    13,291,387.88x = 18,342,131.64 × 7,179,816.38
  4. Step 4: Simplify right side
    13,291,387.88x = 131,693,137,192,988.27
  5. Step 5: Solve for x
    x = 131,693,137,192,988.27/13,291,387.88
  6. Step 6: Final answer
    x = 9,908,155.44

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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.