Home / 39,679.64-54,759.48-21,775.29

Finding the Fourth Proportional to 39,679.64, 54,759.48 and 21,775.29

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Solution

The fourth proportional to 39,679.64, 54,759.48 and 21,775.29 is: 30,050.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.64 : 54,759.48 = 21,775.29 : x
  2. Step 2: Convert to fraction form
    39,679.64/54,759.48 = 21,775.29/x
  3. Step 3: Cross multiply
    39,679.64x = 54,759.48 × 21,775.29
  4. Step 4: Simplify right side
    39,679.64x = 1,192,403,270.24
  5. Step 5: Solve for x
    x = 1,192,403,270.24/39,679.64
  6. Step 6: Final answer
    x = 30,050.76

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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.