Home / 39,807.84-54,933.69-21,902.86

Finding the Fourth Proportional to 39,807.84, 54,933.69 and 21,902.86

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Solution

The fourth proportional to 39,807.84, 54,933.69 and 21,902.86 is: 30,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.84 : 54,933.69 = 21,902.86 : x
  2. Step 2: Convert to fraction form
    39,807.84/54,933.69 = 21,902.86/x
  3. Step 3: Cross multiply
    39,807.84x = 54,933.69 × 21,902.86
  4. Step 4: Simplify right side
    39,807.84x = 1,203,204,921.35
  5. Step 5: Solve for x
    x = 1,203,204,921.35/39,807.84
  6. Step 6: Final answer
    x = 30,225.33

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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.