Home / 39,888.12-55,044.77-21,982.66

Finding the Fourth Proportional to 39,888.12, 55,044.77 and 21,982.66

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Solution

The fourth proportional to 39,888.12, 55,044.77 and 21,982.66 is: 30,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.12 : 55,044.77 = 21,982.66 : x
  2. Step 2: Convert to fraction form
    39,888.12/55,044.77 = 21,982.66/x
  3. Step 3: Cross multiply
    39,888.12x = 55,044.77 × 21,982.66
  4. Step 4: Simplify right side
    39,888.12x = 1,210,030,353.77
  5. Step 5: Solve for x
    x = 1,210,030,353.77/39,888.12
  6. Step 6: Final answer
    x = 30,335.61

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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.