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Finding the Fourth Proportional to 12,372.72, 18,560.72 and 6,529.76

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Solution

The fourth proportional to 12,372.72, 18,560.72 and 6,529.76 is: 9,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.72 : 18,560.72 = 6,529.76 : x
  2. Step 2: Convert to fraction form
    12,372.72/18,560.72 = 6,529.76/x
  3. Step 3: Cross multiply
    12,372.72x = 18,560.72 × 6,529.76
  4. Step 4: Simplify right side
    12,372.72x = 121,197,047.03
  5. Step 5: Solve for x
    x = 121,197,047.03/12,372.72
  6. Step 6: Final answer
    x = 9,795.51

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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.