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Finding the Fourth Proportional to 20,636.52, 30,913.18 and 9,527.72

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Solution

The fourth proportional to 20,636.52, 30,913.18 and 9,527.72 is: 14,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.52 : 30,913.18 = 9,527.72 : x
  2. Step 2: Convert to fraction form
    20,636.52/30,913.18 = 9,527.72/x
  3. Step 3: Cross multiply
    20,636.52x = 30,913.18 × 9,527.72
  4. Step 4: Simplify right side
    20,636.52x = 294,532,123.35
  5. Step 5: Solve for x
    x = 294,532,123.35/20,636.52
  6. Step 6: Final answer
    x = 14,272.37

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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.