Home / 13,174.84-18,181.11-7,876.72

Finding the Fourth Proportional to 13,174.84, 18,181.11 and 7,876.72

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Solution

The fourth proportional to 13,174.84, 18,181.11 and 7,876.72 is: 10,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.84 : 18,181.11 = 7,876.72 : x
  2. Step 2: Convert to fraction form
    13,174.84/18,181.11 = 7,876.72/x
  3. Step 3: Cross multiply
    13,174.84x = 18,181.11 × 7,876.72
  4. Step 4: Simplify right side
    13,174.84x = 143,207,512.76
  5. Step 5: Solve for x
    x = 143,207,512.76/13,174.84
  6. Step 6: Final answer
    x = 10,869.77

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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.