Home / 15,084.36-20,815.92-8,370

Finding the Fourth Proportional to 15,084.36, 20,815.92 and 8,370

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Solution

The fourth proportional to 15,084.36, 20,815.92 and 8,370 is: 11,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.36 : 20,815.92 = 8,370 : x
  2. Step 2: Convert to fraction form
    15,084.36/20,815.92 = 8,370/x
  3. Step 3: Cross multiply
    15,084.36x = 20,815.92 × 8,370
  4. Step 4: Simplify right side
    15,084.36x = 174,229,250.40
  5. Step 5: Solve for x
    x = 174,229,250.40/15,084.36
  6. Step 6: Final answer
    x = 11,550.32

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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.