Home / 18,803.18-28,205.28-5,475.64

Finding the Fourth Proportional to 18,803.18, 28,205.28 and 5,475.64

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Solution

The fourth proportional to 18,803.18, 28,205.28 and 5,475.64 is: 8,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.18 : 28,205.28 = 5,475.64 : x
  2. Step 2: Convert to fraction form
    18,803.18/28,205.28 = 5,475.64/x
  3. Step 3: Cross multiply
    18,803.18x = 28,205.28 × 5,475.64
  4. Step 4: Simplify right side
    18,803.18x = 154,441,868.33
  5. Step 5: Solve for x
    x = 154,441,868.33/18,803.18
  6. Step 6: Final answer
    x = 8,213.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.