Home / 20,374.20-28,074.24-16,379.28

Finding the Fourth Proportional to 20,374.20, 28,074.24 and 16,379.28

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Solution

The fourth proportional to 20,374.20, 28,074.24 and 16,379.28 is: 22,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.20 : 28,074.24 = 16,379.28 : x
  2. Step 2: Convert to fraction form
    20,374.20/28,074.24 = 16,379.28/x
  3. Step 3: Cross multiply
    20,374.20x = 28,074.24 × 16,379.28
  4. Step 4: Simplify right side
    20,374.20x = 459,835,837.75
  5. Step 5: Solve for x
    x = 459,835,837.75/20,374.20
  6. Step 6: Final answer
    x = 22,569.52

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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.