Home / 21,789.44-30,032.88-16,683.20

Finding the Fourth Proportional to 21,789.44, 30,032.88 and 16,683.20

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Solution

The fourth proportional to 21,789.44, 30,032.88 and 16,683.20 is: 22,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.44 : 30,032.88 = 16,683.20 : x
  2. Step 2: Convert to fraction form
    21,789.44/30,032.88 = 16,683.20/x
  3. Step 3: Cross multiply
    21,789.44x = 30,032.88 × 16,683.20
  4. Step 4: Simplify right side
    21,789.44x = 501,044,543.62
  5. Step 5: Solve for x
    x = 501,044,543.62/21,789.44
  6. Step 6: Final answer
    x = 22,994.83

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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.