Home / 10,279.96-15,420.60-3,615.64

Finding the Fourth Proportional to 10,279.96, 15,420.60 and 3,615.64

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Solution

The fourth proportional to 10,279.96, 15,420.60 and 3,615.64 is: 5,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.96 : 15,420.60 = 3,615.64 : x
  2. Step 2: Convert to fraction form
    10,279.96/15,420.60 = 3,615.64/x
  3. Step 3: Cross multiply
    10,279.96x = 15,420.60 × 3,615.64
  4. Step 4: Simplify right side
    10,279.96x = 55,755,338.18
  5. Step 5: Solve for x
    x = 55,755,338.18/10,279.96
  6. Step 6: Final answer
    x = 5,423.69

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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.