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Finding the Fourth Proportional to 12,656.53, 18,979.53 and 4,334.86

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Solution

The fourth proportional to 12,656.53, 18,979.53 and 4,334.86 is: 6,500.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.53 : 18,979.53 = 4,334.86 : x
  2. Step 2: Convert to fraction form
    12,656.53/18,979.53 = 4,334.86/x
  3. Step 3: Cross multiply
    12,656.53x = 18,979.53 × 4,334.86
  4. Step 4: Simplify right side
    12,656.53x = 82,273,605.42
  5. Step 5: Solve for x
    x = 82,273,605.42/12,656.53
  6. Step 6: Final answer
    x = 6,500.49

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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.