Home / 28,393.71-39,192.51-18,314.39

Finding the Fourth Proportional to 28,393.71, 39,192.51 and 18,314.39

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Solution

The fourth proportional to 28,393.71, 39,192.51 and 18,314.39 is: 25,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.71 : 39,192.51 = 18,314.39 : x
  2. Step 2: Convert to fraction form
    28,393.71/39,192.51 = 18,314.39/x
  3. Step 3: Cross multiply
    28,393.71x = 39,192.51 × 18,314.39
  4. Step 4: Simplify right side
    28,393.71x = 717,786,717.26
  5. Step 5: Solve for x
    x = 717,786,717.26/28,393.71
  6. Step 6: Final answer
    x = 25,279.78

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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.