Home / 15,115.47-20,855.48-8,824.23

Finding the Fourth Proportional to 15,115.47, 20,855.48 and 8,824.23

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Solution

The fourth proportional to 15,115.47, 20,855.48 and 8,824.23 is: 12,175.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.47 : 20,855.48 = 8,824.23 : x
  2. Step 2: Convert to fraction form
    15,115.47/20,855.48 = 8,824.23/x
  3. Step 3: Cross multiply
    15,115.47x = 20,855.48 × 8,824.23
  4. Step 4: Simplify right side
    15,115.47x = 184,033,508.16
  5. Step 5: Solve for x
    x = 184,033,508.16/15,115.47
  6. Step 6: Final answer
    x = 12,175.18

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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.