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Finding the Fourth Proportional to 12,659.92, 18,985.47 and 7,046.15

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Solution

The fourth proportional to 12,659.92, 18,985.47 and 7,046.15 is: 10,566.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.92 : 18,985.47 = 7,046.15 : x
  2. Step 2: Convert to fraction form
    12,659.92/18,985.47 = 7,046.15/x
  3. Step 3: Cross multiply
    12,659.92x = 18,985.47 × 7,046.15
  4. Step 4: Simplify right side
    12,659.92x = 133,774,469.44
  5. Step 5: Solve for x
    x = 133,774,469.44/12,659.92
  6. Step 6: Final answer
    x = 10,566.77

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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.