Home / 39,808.55-54,937.08-21,905.52

Finding the Fourth Proportional to 39,808.55, 54,937.08 and 21,905.52

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Solution

The fourth proportional to 39,808.55, 54,937.08 and 21,905.52 is: 30,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.55 : 54,937.08 = 21,905.52 : x
  2. Step 2: Convert to fraction form
    39,808.55/54,937.08 = 21,905.52/x
  3. Step 3: Cross multiply
    39,808.55x = 54,937.08 × 21,905.52
  4. Step 4: Simplify right side
    39,808.55x = 1,203,425,304.68
  5. Step 5: Solve for x
    x = 1,203,425,304.68/39,808.55
  6. Step 6: Final answer
    x = 30,230.33

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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.