Home / 12,921,472.68-17,832,495.24-7,120,253.52

Finding the Fourth Proportional to 12,921,472.68, 17,832,495.24 and 7,120,253.52

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Solution

The fourth proportional to 12,921,472.68, 17,832,495.24 and 7,120,253.52 is: 9,826,425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,472.68 : 17,832,495.24 = 7,120,253.52 : x
  2. Step 2: Convert to fraction form
    12,921,472.68/17,832,495.24 = 7,120,253.52/x
  3. Step 3: Cross multiply
    12,921,472.68x = 17,832,495.24 × 7,120,253.52
  4. Step 4: Simplify right side
    12,921,472.68x = 126,971,887,002,993.22
  5. Step 5: Solve for x
    x = 126,971,887,002,993.22/12,921,472.68
  6. Step 6: Final answer
    x = 9,826,425.37

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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.