Home / 39,708.85-54,799.08-21,805.02

Finding the Fourth Proportional to 39,708.85, 54,799.08 and 21,805.02

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Solution

The fourth proportional to 39,708.85, 54,799.08 and 21,805.02 is: 30,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.85 : 54,799.08 = 21,805.02 : x
  2. Step 2: Convert to fraction form
    39,708.85/54,799.08 = 21,805.02/x
  3. Step 3: Cross multiply
    39,708.85x = 54,799.08 × 21,805.02
  4. Step 4: Simplify right side
    39,708.85x = 1,194,895,035.38
  5. Step 5: Solve for x
    x = 1,194,895,035.38/39,708.85
  6. Step 6: Final answer
    x = 30,091.40

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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.