Home / 20,446.72-28,218.32-11,496.40

Finding the Fourth Proportional to 20,446.72, 28,218.32 and 11,496.40

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Solution

The fourth proportional to 20,446.72, 28,218.32 and 11,496.40 is: 15,866.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.72 : 28,218.32 = 11,496.40 : x
  2. Step 2: Convert to fraction form
    20,446.72/28,218.32 = 11,496.40/x
  3. Step 3: Cross multiply
    20,446.72x = 28,218.32 × 11,496.40
  4. Step 4: Simplify right side
    20,446.72x = 324,409,094.05
  5. Step 5: Solve for x
    x = 324,409,094.05/20,446.72
  6. Step 6: Final answer
    x = 15,866.07

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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.