Home / 39,888.89-55,044.19-21,982.90

Finding the Fourth Proportional to 39,888.89, 55,044.19 and 21,982.90

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Solution

The fourth proportional to 39,888.89, 55,044.19 and 21,982.90 is: 30,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.89 : 55,044.19 = 21,982.90 : x
  2. Step 2: Convert to fraction form
    39,888.89/55,044.19 = 21,982.90/x
  3. Step 3: Cross multiply
    39,888.89x = 55,044.19 × 21,982.90
  4. Step 4: Simplify right side
    39,888.89x = 1,210,030,924.35
  5. Step 5: Solve for x
    x = 1,210,030,924.35/39,888.89
  6. Step 6: Final answer
    x = 30,335.04

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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.