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Finding the Fourth Proportional to 20,355.57, 30,533.02 and 5,564.50

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Solution

The fourth proportional to 20,355.57, 30,533.02 and 5,564.50 is: 8,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.57 : 30,533.02 = 5,564.50 : x
  2. Step 2: Convert to fraction form
    20,355.57/30,533.02 = 5,564.50/x
  3. Step 3: Cross multiply
    20,355.57x = 30,533.02 × 5,564.50
  4. Step 4: Simplify right side
    20,355.57x = 169,900,899.55
  5. Step 5: Solve for x
    x = 169,900,899.55/20,355.57
  6. Step 6: Final answer
    x = 8,346.65

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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.