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Finding the Fourth Proportional to 18,800.48, 28,205.04 and 5,653.12

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Solution

The fourth proportional to 18,800.48, 28,205.04 and 5,653.12 is: 8,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.48 : 28,205.04 = 5,653.12 : x
  2. Step 2: Convert to fraction form
    18,800.48/28,205.04 = 5,653.12/x
  3. Step 3: Cross multiply
    18,800.48x = 28,205.04 × 5,653.12
  4. Step 4: Simplify right side
    18,800.48x = 159,446,475.72
  5. Step 5: Solve for x
    x = 159,446,475.72/18,800.48
  6. Step 6: Final answer
    x = 8,480.98

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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.