Home / 20,425.48-28,165.80-16,169.74

Finding the Fourth Proportional to 20,425.48, 28,165.80 and 16,169.74

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Solution

The fourth proportional to 20,425.48, 28,165.80 and 16,169.74 is: 22,297.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.48 : 28,165.80 = 16,169.74 : x
  2. Step 2: Convert to fraction form
    20,425.48/28,165.80 = 16,169.74/x
  3. Step 3: Cross multiply
    20,425.48x = 28,165.80 × 16,169.74
  4. Step 4: Simplify right side
    20,425.48x = 455,433,662.89
  5. Step 5: Solve for x
    x = 455,433,662.89/20,425.48
  6. Step 6: Final answer
    x = 22,297.33

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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.