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Finding the Fourth Proportional to 18,735.91, 28,110.04 and 8,873.96

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Solution

The fourth proportional to 18,735.91, 28,110.04 and 8,873.96 is: 13,313.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.91 : 28,110.04 = 8,873.96 : x
  2. Step 2: Convert to fraction form
    18,735.91/28,110.04 = 8,873.96/x
  3. Step 3: Cross multiply
    18,735.91x = 28,110.04 × 8,873.96
  4. Step 4: Simplify right side
    18,735.91x = 249,447,207.82
  5. Step 5: Solve for x
    x = 249,447,207.82/18,735.91
  6. Step 6: Final answer
    x = 13,313.86

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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.