Home / 13,187.68-19,873.26-11,938.66

Finding the Fourth Proportional to 13,187.68, 19,873.26 and 11,938.66

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Solution

The fourth proportional to 13,187.68, 19,873.26 and 11,938.66 is: 17,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.68 : 19,873.26 = 11,938.66 : x
  2. Step 2: Convert to fraction form
    13,187.68/19,873.26 = 11,938.66/x
  3. Step 3: Cross multiply
    13,187.68x = 19,873.26 × 11,938.66
  4. Step 4: Simplify right side
    13,187.68x = 237,260,094.23
  5. Step 5: Solve for x
    x = 237,260,094.23/13,187.68
  6. Step 6: Final answer
    x = 17,991.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.