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Finding the Fourth Proportional to 18,993.52, 28,490.64 and 6,527.86

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Solution

The fourth proportional to 18,993.52, 28,490.64 and 6,527.86 is: 9,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.52 : 28,490.64 = 6,527.86 : x
  2. Step 2: Convert to fraction form
    18,993.52/28,490.64 = 6,527.86/x
  3. Step 3: Cross multiply
    18,993.52x = 28,490.64 × 6,527.86
  4. Step 4: Simplify right side
    18,993.52x = 185,982,909.23
  5. Step 5: Solve for x
    x = 185,982,909.23/18,993.52
  6. Step 6: Final answer
    x = 9,791.91

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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.