Home / 39,309.73-54,247.77-21,404.86

Finding the Fourth Proportional to 39,309.73, 54,247.77 and 21,404.86

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Solution

The fourth proportional to 39,309.73, 54,247.77 and 21,404.86 is: 29,538.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.73 : 54,247.77 = 21,404.86 : x
  2. Step 2: Convert to fraction form
    39,309.73/54,247.77 = 21,404.86/x
  3. Step 3: Cross multiply
    39,309.73x = 54,247.77 × 21,404.86
  4. Step 4: Simplify right side
    39,309.73x = 1,161,165,922.16
  5. Step 5: Solve for x
    x = 1,161,165,922.16/39,309.73
  6. Step 6: Final answer
    x = 29,538.89

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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.