Home / 20,496.60-28,286.68-11,423.36

Finding the Fourth Proportional to 20,496.60, 28,286.68 and 11,423.36

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Solution

The fourth proportional to 20,496.60, 28,286.68 and 11,423.36 is: 15,765.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.60 : 28,286.68 = 11,423.36 : x
  2. Step 2: Convert to fraction form
    20,496.60/28,286.68 = 11,423.36/x
  3. Step 3: Cross multiply
    20,496.60x = 28,286.68 × 11,423.36
  4. Step 4: Simplify right side
    20,496.60x = 323,128,928.84
  5. Step 5: Solve for x
    x = 323,128,928.84/20,496.60
  6. Step 6: Final answer
    x = 15,765.00

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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.