Home / 39,992.05-55,188.57-21,842.69

Finding the Fourth Proportional to 39,992.05, 55,188.57 and 21,842.69

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Solution

The fourth proportional to 39,992.05, 55,188.57 and 21,842.69 is: 30,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,992.05 : 55,188.57 = 21,842.69 : x
  2. Step 2: Convert to fraction form
    39,992.05/55,188.57 = 21,842.69/x
  3. Step 3: Cross multiply
    39,992.05x = 55,188.57 × 21,842.69
  4. Step 4: Simplify right side
    39,992.05x = 1,205,466,495.50
  5. Step 5: Solve for x
    x = 1,205,466,495.50/39,992.05
  6. Step 6: Final answer
    x = 30,142.65

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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.