Home / 20,399.81-30,570.98-16,221.27

Finding the Fourth Proportional to 20,399.81, 30,570.98 and 16,221.27

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Solution

The fourth proportional to 20,399.81, 30,570.98 and 16,221.27 is: 24,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.81 : 30,570.98 = 16,221.27 : x
  2. Step 2: Convert to fraction form
    20,399.81/30,570.98 = 16,221.27/x
  3. Step 3: Cross multiply
    20,399.81x = 30,570.98 × 16,221.27
  4. Step 4: Simplify right side
    20,399.81x = 495,900,120.74
  5. Step 5: Solve for x
    x = 495,900,120.74/20,399.81
  6. Step 6: Final answer
    x = 24,309.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.