Home / 15,115.04-20,855.52-8,824.56

Finding the Fourth Proportional to 15,115.04, 20,855.52 and 8,824.56

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Solution

The fourth proportional to 15,115.04, 20,855.52 and 8,824.56 is: 12,176.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.04 : 20,855.52 = 8,824.56 : x
  2. Step 2: Convert to fraction form
    15,115.04/20,855.52 = 8,824.56/x
  3. Step 3: Cross multiply
    15,115.04x = 20,855.52 × 8,824.56
  4. Step 4: Simplify right side
    15,115.04x = 184,040,787.57
  5. Step 5: Solve for x
    x = 184,040,787.57/15,115.04
  6. Step 6: Final answer
    x = 12,176.00

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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.