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Finding the Fourth Proportional to 39,894.78, 59,823.77 and 11,804.79

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Solution

The fourth proportional to 39,894.78, 59,823.77 and 11,804.79 is: 17,701.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.78 : 59,823.77 = 11,804.79 : x
  2. Step 2: Convert to fraction form
    39,894.78/59,823.77 = 11,804.79/x
  3. Step 3: Cross multiply
    39,894.78x = 59,823.77 × 11,804.79
  4. Step 4: Simplify right side
    39,894.78x = 706,207,041.86
  5. Step 5: Solve for x
    x = 706,207,041.86/39,894.78
  6. Step 6: Final answer
    x = 17,701.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.