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Finding the Fourth Proportional to 18,869.29, 28,293.00 and 7,763.43

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Solution

The fourth proportional to 18,869.29, 28,293.00 and 7,763.43 is: 11,640.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.29 : 28,293.00 = 7,763.43 : x
  2. Step 2: Convert to fraction form
    18,869.29/28,293.00 = 7,763.43/x
  3. Step 3: Cross multiply
    18,869.29x = 28,293.00 × 7,763.43
  4. Step 4: Simplify right side
    18,869.29x = 219,650,811.32
  5. Step 5: Solve for x
    x = 219,650,811.32/18,869.29
  6. Step 6: Final answer
    x = 11,640.65

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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.