Home / 20,616.24-28,451.10-12,118.23

Finding the Fourth Proportional to 20,616.24, 28,451.10 and 12,118.23

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Solution

The fourth proportional to 20,616.24, 28,451.10 and 12,118.23 is: 16,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.24 : 28,451.10 = 12,118.23 : x
  2. Step 2: Convert to fraction form
    20,616.24/28,451.10 = 12,118.23/x
  3. Step 3: Cross multiply
    20,616.24x = 28,451.10 × 12,118.23
  4. Step 4: Simplify right side
    20,616.24x = 344,776,973.55
  5. Step 5: Solve for x
    x = 344,776,973.55/20,616.24
  6. Step 6: Final answer
    x = 16,723.56

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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.