Home / 39,662.16-54,732.88-21,756.84

Finding the Fourth Proportional to 39,662.16, 54,732.88 and 21,756.84

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Solution

The fourth proportional to 39,662.16, 54,732.88 and 21,756.84 is: 30,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,662.16 : 54,732.88 = 21,756.84 : x
  2. Step 2: Convert to fraction form
    39,662.16/54,732.88 = 21,756.84/x
  3. Step 3: Cross multiply
    39,662.16x = 54,732.88 × 21,756.84
  4. Step 4: Simplify right side
    39,662.16x = 1,190,814,512.90
  5. Step 5: Solve for x
    x = 1,190,814,512.90/39,662.16
  6. Step 6: Final answer
    x = 30,023.95

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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.