Home / 39,269.09-54,189.77-21,364.17

Finding the Fourth Proportional to 39,269.09, 54,189.77 and 21,364.17

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Solution

The fourth proportional to 39,269.09, 54,189.77 and 21,364.17 is: 29,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,269.09 : 54,189.77 = 21,364.17 : x
  2. Step 2: Convert to fraction form
    39,269.09/54,189.77 = 21,364.17/x
  3. Step 3: Cross multiply
    39,269.09x = 54,189.77 × 21,364.17
  4. Step 4: Simplify right side
    39,269.09x = 1,157,719,511.95
  5. Step 5: Solve for x
    x = 1,157,719,511.95/39,269.09
  6. Step 6: Final answer
    x = 29,481.70

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1.5x scale

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.