Home / 39,701.39-54,788.54-21,798

Finding the Fourth Proportional to 39,701.39, 54,788.54 and 21,798

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Solution

The fourth proportional to 39,701.39, 54,788.54 and 21,798 is: 30,081.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,701.39 : 54,788.54 = 21,798 : x
  2. Step 2: Convert to fraction form
    39,701.39/54,788.54 = 21,798/x
  3. Step 3: Cross multiply
    39,701.39x = 54,788.54 × 21,798
  4. Step 4: Simplify right side
    39,701.39x = 1,194,280,485.93
  5. Step 5: Solve for x
    x = 1,194,280,485.93/39,701.39
  6. Step 6: Final answer
    x = 30,081.58

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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.