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Finding the Fourth Proportional to 29,141.42, 43,712.06 and 12,490.66

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Solution

The fourth proportional to 29,141.42, 43,712.06 and 12,490.66 is: 18,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,141.42 : 43,712.06 = 12,490.66 : x
  2. Step 2: Convert to fraction form
    29,141.42/43,712.06 = 12,490.66/x
  3. Step 3: Cross multiply
    29,141.42x = 43,712.06 × 12,490.66
  4. Step 4: Simplify right side
    29,141.42x = 545,992,479.36
  5. Step 5: Solve for x
    x = 545,992,479.36/29,141.42
  6. Step 6: Final answer
    x = 18,735.96

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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.