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Finding the Fourth Proportional to 18,695.63, 28,019.05 and 7,589.32

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Solution

The fourth proportional to 18,695.63, 28,019.05 and 7,589.32 is: 11,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.63 : 28,019.05 = 7,589.32 : x
  2. Step 2: Convert to fraction form
    18,695.63/28,019.05 = 7,589.32/x
  3. Step 3: Cross multiply
    18,695.63x = 28,019.05 × 7,589.32
  4. Step 4: Simplify right side
    18,695.63x = 212,645,447.53
  5. Step 5: Solve for x
    x = 212,645,447.53/18,695.63
  6. Step 6: Final answer
    x = 11,374.07

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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.