Home / 13,319,262.78-18,380,582.64-7,207,691.28

Finding the Fourth Proportional to 13,319,262.78, 18,380,582.64 and 7,207,691.28

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Solution

The fourth proportional to 13,319,262.78, 18,380,582.64 and 7,207,691.28 is: 9,946,613.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,262.78 : 18,380,582.64 = 7,207,691.28 : x
  2. Step 2: Convert to fraction form
    13,319,262.78/18,380,582.64 = 7,207,691.28/x
  3. Step 3: Cross multiply
    13,319,262.78x = 18,380,582.64 × 7,207,691.28
  4. Step 4: Simplify right side
    13,319,262.78x = 132,481,565,215,647.39
  5. Step 5: Solve for x
    x = 132,481,565,215,647.39/13,319,262.78
  6. Step 6: Final answer
    x = 9,946,613.97

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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.