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Finding the Fourth Proportional to 18,959.04, 28,437.39 and 5,811.39

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Solution

The fourth proportional to 18,959.04, 28,437.39 and 5,811.39 is: 8,716.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.04 : 28,437.39 = 5,811.39 : x
  2. Step 2: Convert to fraction form
    18,959.04/28,437.39 = 5,811.39/x
  3. Step 3: Cross multiply
    18,959.04x = 28,437.39 × 5,811.39
  4. Step 4: Simplify right side
    18,959.04x = 165,260,763.87
  5. Step 5: Solve for x
    x = 165,260,763.87/18,959.04
  6. Step 6: Final answer
    x = 8,716.73

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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.