Home / 39,830.97-54,967.98-21,682.90

Finding the Fourth Proportional to 39,830.97, 54,967.98 and 21,682.90

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Solution

The fourth proportional to 39,830.97, 54,967.98 and 21,682.90 is: 29,923.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,830.97 : 54,967.98 = 21,682.90 : x
  2. Step 2: Convert to fraction form
    39,830.97/54,967.98 = 21,682.90/x
  3. Step 3: Cross multiply
    39,830.97x = 54,967.98 × 21,682.90
  4. Step 4: Simplify right side
    39,830.97x = 1,191,865,105.13
  5. Step 5: Solve for x
    x = 1,191,865,105.13/39,830.97
  6. Step 6: Final answer
    x = 29,923.08

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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.