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Finding the Fourth Proportional to 20,354.52, 30,528.12 and 7,206.96

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Solution

The fourth proportional to 20,354.52, 30,528.12 and 7,206.96 is: 10,809.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.52 : 30,528.12 = 7,206.96 : x
  2. Step 2: Convert to fraction form
    20,354.52/30,528.12 = 7,206.96/x
  3. Step 3: Cross multiply
    20,354.52x = 30,528.12 × 7,206.96
  4. Step 4: Simplify right side
    20,354.52x = 220,014,939.72
  5. Step 5: Solve for x
    x = 220,014,939.72/20,354.52
  6. Step 6: Final answer
    x = 10,809.14

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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.