Home / 13,166.74-19,757.40-7,888.78

Finding the Fourth Proportional to 13,166.74, 19,757.40 and 7,888.78

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Solution

The fourth proportional to 13,166.74, 19,757.40 and 7,888.78 is: 11,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.74 : 19,757.40 = 7,888.78 : x
  2. Step 2: Convert to fraction form
    13,166.74/19,757.40 = 7,888.78/x
  3. Step 3: Cross multiply
    13,166.74x = 19,757.40 × 7,888.78
  4. Step 4: Simplify right side
    13,166.74x = 155,861,781.97
  5. Step 5: Solve for x
    x = 155,861,781.97/13,166.74
  6. Step 6: Final answer
    x = 11,837.54

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1.5x scale

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.