Home / 28,902.09-39,837.17-19,338.56

Finding the Fourth Proportional to 28,902.09, 39,837.17 and 19,338.56

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Solution

The fourth proportional to 28,902.09, 39,837.17 and 19,338.56 is: 26,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.09 : 39,837.17 = 19,338.56 : x
  2. Step 2: Convert to fraction form
    28,902.09/39,837.17 = 19,338.56/x
  3. Step 3: Cross multiply
    28,902.09x = 39,837.17 × 19,338.56
  4. Step 4: Simplify right side
    28,902.09x = 770,393,502.28
  5. Step 5: Solve for x
    x = 770,393,502.28/28,902.09
  6. Step 6: Final answer
    x = 26,655.29

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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.