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Finding the Fourth Proportional to 12,353.58, 18,440.46 and 11,439.90

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Solution

The fourth proportional to 12,353.58, 18,440.46 and 11,439.90 is: 17,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.58 : 18,440.46 = 11,439.90 : x
  2. Step 2: Convert to fraction form
    12,353.58/18,440.46 = 11,439.90/x
  3. Step 3: Cross multiply
    12,353.58x = 18,440.46 × 11,439.90
  4. Step 4: Simplify right side
    12,353.58x = 210,957,018.35
  5. Step 5: Solve for x
    x = 210,957,018.35/12,353.58
  6. Step 6: Final answer
    x = 17,076.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.