Home / 10,120.64-15,178.63-2,725.68

Finding the Fourth Proportional to 10,120.64, 15,178.63 and 2,725.68

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Solution

The fourth proportional to 10,120.64, 15,178.63 and 2,725.68 is: 4,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.64 : 15,178.63 = 2,725.68 : x
  2. Step 2: Convert to fraction form
    10,120.64/15,178.63 = 2,725.68/x
  3. Step 3: Cross multiply
    10,120.64x = 15,178.63 × 2,725.68
  4. Step 4: Simplify right side
    10,120.64x = 41,372,088.22
  5. Step 5: Solve for x
    x = 41,372,088.22/10,120.64
  6. Step 6: Final answer
    x = 4,087.89

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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.