Home / 38,983.43-53,797.06-21,987.62

Finding the Fourth Proportional to 38,983.43, 53,797.06 and 21,987.62

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Solution

The fourth proportional to 38,983.43, 53,797.06 and 21,987.62 is: 30,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,983.43 : 53,797.06 = 21,987.62 : x
  2. Step 2: Convert to fraction form
    38,983.43/53,797.06 = 21,987.62/x
  3. Step 3: Cross multiply
    38,983.43x = 53,797.06 × 21,987.62
  4. Step 4: Simplify right side
    38,983.43x = 1,182,868,988.44
  5. Step 5: Solve for x
    x = 1,182,868,988.44/38,983.43
  6. Step 6: Final answer
    x = 30,342.87

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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.