Home / 39,847.82-54,988.07-21,943.58

Finding the Fourth Proportional to 39,847.82, 54,988.07 and 21,943.58

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Solution

The fourth proportional to 39,847.82, 54,988.07 and 21,943.58 is: 30,281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.82 : 54,988.07 = 21,943.58 : x
  2. Step 2: Convert to fraction form
    39,847.82/54,988.07 = 21,943.58/x
  3. Step 3: Cross multiply
    39,847.82x = 54,988.07 × 21,943.58
  4. Step 4: Simplify right side
    39,847.82x = 1,206,634,728.43
  5. Step 5: Solve for x
    x = 1,206,634,728.43/39,847.82
  6. Step 6: Final answer
    x = 30,281.08

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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.