Home / 20,456.35-28,226.46-11,503.32

Finding the Fourth Proportional to 20,456.35, 28,226.46 and 11,503.32

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Solution

The fourth proportional to 20,456.35, 28,226.46 and 11,503.32 is: 15,872.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.35 : 28,226.46 = 11,503.32 : x
  2. Step 2: Convert to fraction form
    20,456.35/28,226.46 = 11,503.32/x
  3. Step 3: Cross multiply
    20,456.35x = 28,226.46 × 11,503.32
  4. Step 4: Simplify right side
    20,456.35x = 324,697,889.47
  5. Step 5: Solve for x
    x = 324,697,889.47/20,456.35
  6. Step 6: Final answer
    x = 15,872.72

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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.