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Finding the Fourth Proportional to 20,354.59, 30,533.70 and 5,563.58

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Solution

The fourth proportional to 20,354.59, 30,533.70 and 5,563.58 is: 8,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.59 : 30,533.70 = 5,563.58 : x
  2. Step 2: Convert to fraction form
    20,354.59/30,533.70 = 5,563.58/x
  3. Step 3: Cross multiply
    20,354.59x = 30,533.70 × 5,563.58
  4. Step 4: Simplify right side
    20,354.59x = 169,876,682.65
  5. Step 5: Solve for x
    x = 169,876,682.65/20,354.59
  6. Step 6: Final answer
    x = 8,345.87

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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.