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Finding the Fourth Proportional to 20,464.60, 30,697.08 and 7,307.77

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Solution

The fourth proportional to 20,464.60, 30,697.08 and 7,307.77 is: 10,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.60 : 30,697.08 = 7,307.77 : x
  2. Step 2: Convert to fraction form
    20,464.60/30,697.08 = 7,307.77/x
  3. Step 3: Cross multiply
    20,464.60x = 30,697.08 × 7,307.77
  4. Step 4: Simplify right side
    20,464.60x = 224,327,200.31
  5. Step 5: Solve for x
    x = 224,327,200.31/20,464.60
  6. Step 6: Final answer
    x = 10,961.72

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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.