Home / 10,115.68-13,954.72-7,873.60

Finding the Fourth Proportional to 10,115.68, 13,954.72 and 7,873.60

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Solution

The fourth proportional to 10,115.68, 13,954.72 and 7,873.60 is: 10,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.68 : 13,954.72 = 7,873.60 : x
  2. Step 2: Convert to fraction form
    10,115.68/13,954.72 = 7,873.60/x
  3. Step 3: Cross multiply
    10,115.68x = 13,954.72 × 7,873.60
  4. Step 4: Simplify right side
    10,115.68x = 109,873,883.39
  5. Step 5: Solve for x
    x = 109,873,883.39/10,115.68
  6. Step 6: Final answer
    x = 10,861.74

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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.