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Finding the Fourth Proportional to 18,695.46, 28,005.99 and 8,804.76

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Solution

The fourth proportional to 18,695.46, 28,005.99 and 8,804.76 is: 13,189.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.46 : 28,005.99 = 8,804.76 : x
  2. Step 2: Convert to fraction form
    18,695.46/28,005.99 = 8,804.76/x
  3. Step 3: Cross multiply
    18,695.46x = 28,005.99 × 8,804.76
  4. Step 4: Simplify right side
    18,695.46x = 246,586,020.51
  5. Step 5: Solve for x
    x = 246,586,020.51/18,695.46
  6. Step 6: Final answer
    x = 13,189.62

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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.