Home / 15,084.38-20,816.92-8,370.50

Finding the Fourth Proportional to 15,084.38, 20,816.92 and 8,370.50

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Solution

The fourth proportional to 15,084.38, 20,816.92 and 8,370.50 is: 11,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.38 : 20,816.92 = 8,370.50 : x
  2. Step 2: Convert to fraction form
    15,084.38/20,816.92 = 8,370.50/x
  3. Step 3: Cross multiply
    15,084.38x = 20,816.92 × 8,370.50
  4. Step 4: Simplify right side
    15,084.38x = 174,248,028.86
  5. Step 5: Solve for x
    x = 174,248,028.86/15,084.38
  6. Step 6: Final answer
    x = 11,551.55

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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.