Home / 20,424.48-28,164.42-16,168.74

Finding the Fourth Proportional to 20,424.48, 28,164.42 and 16,168.74

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Solution

The fourth proportional to 20,424.48, 28,164.42 and 16,168.74 is: 22,295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.48 : 28,164.42 = 16,168.74 : x
  2. Step 2: Convert to fraction form
    20,424.48/28,164.42 = 16,168.74/x
  3. Step 3: Cross multiply
    20,424.48x = 28,164.42 × 16,168.74
  4. Step 4: Simplify right side
    20,424.48x = 455,383,184.23
  5. Step 5: Solve for x
    x = 455,383,184.23/20,424.48
  6. Step 6: Final answer
    x = 22,295.95

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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.