Home / 18,181.71-25,091.10-10,628.69

Finding the Fourth Proportional to 18,181.71, 25,091.10 and 10,628.69

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Solution

The fourth proportional to 18,181.71, 25,091.10 and 10,628.69 is: 14,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.71 : 25,091.10 = 10,628.69 : x
  2. Step 2: Convert to fraction form
    18,181.71/25,091.10 = 10,628.69/x
  3. Step 3: Cross multiply
    18,181.71x = 25,091.10 × 10,628.69
  4. Step 4: Simplify right side
    18,181.71x = 266,685,398.20
  5. Step 5: Solve for x
    x = 266,685,398.20/18,181.71
  6. Step 6: Final answer
    x = 14,667.78

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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.