Home / 28,040.80-38,696.36-15,294

Finding the Fourth Proportional to 28,040.80, 38,696.36 and 15,294

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Solution

The fourth proportional to 28,040.80, 38,696.36 and 15,294 is: 21,105.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.80 : 38,696.36 = 15,294 : x
  2. Step 2: Convert to fraction form
    28,040.80/38,696.36 = 15,294/x
  3. Step 3: Cross multiply
    28,040.80x = 38,696.36 × 15,294
  4. Step 4: Simplify right side
    28,040.80x = 591,822,129.84
  5. Step 5: Solve for x
    x = 591,822,129.84/28,040.80
  6. Step 6: Final answer
    x = 21,105.75

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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.