Home / 13,320,749.20-18,382,689.30-7,209,177.16

Finding the Fourth Proportional to 13,320,749.20, 18,382,689.30 and 7,209,177.16

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Solution

The fourth proportional to 13,320,749.20, 18,382,689.30 and 7,209,177.16 is: 9,948,694.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,749.20 : 18,382,689.30 = 7,209,177.16 : x
  2. Step 2: Convert to fraction form
    13,320,749.20/18,382,689.30 = 7,209,177.16/x
  3. Step 3: Cross multiply
    13,320,749.20x = 18,382,689.30 × 7,209,177.16
  4. Step 4: Simplify right side
    13,320,749.20x = 132,524,063,840,936.39
  5. Step 5: Solve for x
    x = 132,524,063,840,936.39/13,320,749.20
  6. Step 6: Final answer
    x = 9,948,694.47

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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.