Home / 39,632.36-54,692.71-21,728.12

Finding the Fourth Proportional to 39,632.36, 54,692.71 and 21,728.12

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Solution

The fourth proportional to 39,632.36, 54,692.71 and 21,728.12 is: 29,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,632.36 : 54,692.71 = 21,728.12 : x
  2. Step 2: Convert to fraction form
    39,632.36/54,692.71 = 21,728.12/x
  3. Step 3: Cross multiply
    39,632.36x = 54,692.71 × 21,728.12
  4. Step 4: Simplify right side
    39,632.36x = 1,188,369,438.22
  5. Step 5: Solve for x
    x = 1,188,369,438.22/39,632.36
  6. Step 6: Final answer
    x = 29,984.83

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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.