Home / 39,808.04-54,933.56-21,902

Finding the Fourth Proportional to 39,808.04, 54,933.56 and 21,902

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Solution

The fourth proportional to 39,808.04, 54,933.56 and 21,902 is: 30,223.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.04 : 54,933.56 = 21,902 : x
  2. Step 2: Convert to fraction form
    39,808.04/54,933.56 = 21,902/x
  3. Step 3: Cross multiply
    39,808.04x = 54,933.56 × 21,902
  4. Step 4: Simplify right side
    39,808.04x = 1,203,154,831.12
  5. Step 5: Solve for x
    x = 1,203,154,831.12/39,808.04
  6. Step 6: Final answer
    x = 30,223.92

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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.