Home / 20,997.30-28,952.22-15,683.16

Finding the Fourth Proportional to 20,997.30, 28,952.22 and 15,683.16

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Solution

The fourth proportional to 20,997.30, 28,952.22 and 15,683.16 is: 21,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.30 : 28,952.22 = 15,683.16 : x
  2. Step 2: Convert to fraction form
    20,997.30/28,952.22 = 15,683.16/x
  3. Step 3: Cross multiply
    20,997.30x = 28,952.22 × 15,683.16
  4. Step 4: Simplify right side
    20,997.30x = 454,062,298.62
  5. Step 5: Solve for x
    x = 454,062,298.62/20,997.30
  6. Step 6: Final answer
    x = 21,624.79

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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.