Home / 38,972.79-53,782.12-21,067.64

Finding the Fourth Proportional to 38,972.79, 53,782.12 and 21,067.64

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Solution

The fourth proportional to 38,972.79, 53,782.12 and 21,067.64 is: 29,073.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,972.79 : 53,782.12 = 21,067.64 : x
  2. Step 2: Convert to fraction form
    38,972.79/53,782.12 = 21,067.64/x
  3. Step 3: Cross multiply
    38,972.79x = 53,782.12 × 21,067.64
  4. Step 4: Simplify right side
    38,972.79x = 1,133,062,503.39
  5. Step 5: Solve for x
    x = 1,133,062,503.39/38,972.79
  6. Step 6: Final answer
    x = 29,073.17

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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.