Home / 15,661,505-21,613,024.31-8,786,134.68

Finding the Fourth Proportional to 15,661,505, 21,613,024.31 and 8,786,134.68

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Solution

The fourth proportional to 15,661,505, 21,613,024.31 and 8,786,134.68 is: 12,124,948.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,505 : 21,613,024.31 = 8,786,134.68 : x
  2. Step 2: Convert to fraction form
    15,661,505/21,613,024.31 = 8,786,134.68/x
  3. Step 3: Cross multiply
    15,661,505x = 21,613,024.31 × 8,786,134.68
  4. Step 4: Simplify right side
    15,661,505x = 189,894,942,429,774.06
  5. Step 5: Solve for x
    x = 189,894,942,429,774.06/15,661,505
  6. Step 6: Final answer
    x = 12,124,948.56

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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.