Home / 21,987.56-30,383.01-16,008.81

Finding the Fourth Proportional to 21,987.56, 30,383.01 and 16,008.81

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Solution

The fourth proportional to 21,987.56, 30,383.01 and 16,008.81 is: 22,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.56 : 30,383.01 = 16,008.81 : x
  2. Step 2: Convert to fraction form
    21,987.56/30,383.01 = 16,008.81/x
  3. Step 3: Cross multiply
    21,987.56x = 30,383.01 × 16,008.81
  4. Step 4: Simplify right side
    21,987.56x = 486,395,834.32
  5. Step 5: Solve for x
    x = 486,395,834.32/21,987.56
  6. Step 6: Final answer
    x = 22,121.42

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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.