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Finding the Fourth Proportional to 19,328.68, 28,990.14 and 6,179.68

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Solution

The fourth proportional to 19,328.68, 28,990.14 and 6,179.68 is: 9,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.68 : 28,990.14 = 6,179.68 : x
  2. Step 2: Convert to fraction form
    19,328.68/28,990.14 = 6,179.68/x
  3. Step 3: Cross multiply
    19,328.68x = 28,990.14 × 6,179.68
  4. Step 4: Simplify right side
    19,328.68x = 179,149,788.36
  5. Step 5: Solve for x
    x = 179,149,788.36/19,328.68
  6. Step 6: Final answer
    x = 9,268.60

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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.