Home / 13,181.33-18,191.47-7,876.03

Finding the Fourth Proportional to 13,181.33, 18,191.47 and 7,876.03

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Solution

The fourth proportional to 13,181.33, 18,191.47 and 7,876.03 is: 10,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.33 : 18,191.47 = 7,876.03 : x
  2. Step 2: Convert to fraction form
    13,181.33/18,191.47 = 7,876.03/x
  3. Step 3: Cross multiply
    13,181.33x = 18,191.47 × 7,876.03
  4. Step 4: Simplify right side
    13,181.33x = 143,276,563.46
  5. Step 5: Solve for x
    x = 143,276,563.46/13,181.33
  6. Step 6: Final answer
    x = 10,869.66

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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.