Home / 10,279.60-15,431.55-10,206.70

Finding the Fourth Proportional to 10,279.60, 15,431.55 and 10,206.70

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Solution

The fourth proportional to 10,279.60, 15,431.55 and 10,206.70 is: 15,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.60 : 15,431.55 = 10,206.70 : x
  2. Step 2: Convert to fraction form
    10,279.60/15,431.55 = 10,206.70/x
  3. Step 3: Cross multiply
    10,279.60x = 15,431.55 × 10,206.70
  4. Step 4: Simplify right side
    10,279.60x = 157,505,201.39
  5. Step 5: Solve for x
    x = 157,505,201.39/10,279.60
  6. Step 6: Final answer
    x = 15,322.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.