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Finding the Fourth Proportional to 19,888.29, 27,445.96 and 10,935.87

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Solution

The fourth proportional to 19,888.29, 27,445.96 and 10,935.87 is: 15,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.29 : 27,445.96 = 10,935.87 : x
  2. Step 2: Convert to fraction form
    19,888.29/27,445.96 = 10,935.87/x
  3. Step 3: Cross multiply
    19,888.29x = 27,445.96 × 10,935.87
  4. Step 4: Simplify right side
    19,888.29x = 300,145,361.33
  5. Step 5: Solve for x
    x = 300,145,361.33/19,888.29
  6. Step 6: Final answer
    x = 15,091.56

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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.