Home / 20,399.31-30,570.23-16,220.77

Finding the Fourth Proportional to 20,399.31, 30,570.23 and 16,220.77

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Solution

The fourth proportional to 20,399.31, 30,570.23 and 16,220.77 is: 24,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.31 : 30,570.23 = 16,220.77 : x
  2. Step 2: Convert to fraction form
    20,399.31/30,570.23 = 16,220.77/x
  3. Step 3: Cross multiply
    20,399.31x = 30,570.23 × 16,220.77
  4. Step 4: Simplify right side
    20,399.31x = 495,872,633.80
  5. Step 5: Solve for x
    x = 495,872,633.80/20,399.31
  6. Step 6: Final answer
    x = 24,308.30

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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.