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Finding the Fourth Proportional to 18,863.76, 28,300.94 and 5,537.07

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Solution

The fourth proportional to 18,863.76, 28,300.94 and 5,537.07 is: 8,307.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.76 : 28,300.94 = 5,537.07 : x
  2. Step 2: Convert to fraction form
    18,863.76/28,300.94 = 5,537.07/x
  3. Step 3: Cross multiply
    18,863.76x = 28,300.94 × 5,537.07
  4. Step 4: Simplify right side
    18,863.76x = 156,704,258.16
  5. Step 5: Solve for x
    x = 156,704,258.16/18,863.76
  6. Step 6: Final answer
    x = 8,307.16

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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.