Home / 11,311.08-15,621.49-8,822.76

Finding the Fourth Proportional to 11,311.08, 15,621.49 and 8,822.76

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Solution

The fourth proportional to 11,311.08, 15,621.49 and 8,822.76 is: 12,184.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.08 : 15,621.49 = 8,822.76 : x
  2. Step 2: Convert to fraction form
    11,311.08/15,621.49 = 8,822.76/x
  3. Step 3: Cross multiply
    11,311.08x = 15,621.49 × 8,822.76
  4. Step 4: Simplify right side
    11,311.08x = 137,824,657.11
  5. Step 5: Solve for x
    x = 137,824,657.11/11,311.08
  6. Step 6: Final answer
    x = 12,184.92

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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.