Home / 39,820.44-54,955.89-21,919.08

Finding the Fourth Proportional to 39,820.44, 54,955.89 and 21,919.08

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Solution

The fourth proportional to 39,820.44, 54,955.89 and 21,919.08 is: 30,250.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.44 : 54,955.89 = 21,919.08 : x
  2. Step 2: Convert to fraction form
    39,820.44/54,955.89 = 21,919.08/x
  3. Step 3: Cross multiply
    39,820.44x = 54,955.89 × 21,919.08
  4. Step 4: Simplify right side
    39,820.44x = 1,204,582,549.38
  5. Step 5: Solve for x
    x = 1,204,582,549.38/39,820.44
  6. Step 6: Final answer
    x = 30,250.36

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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.