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Finding the Fourth Proportional to 13,353.76, 18,447.06 and 12,156.76

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Solution

The fourth proportional to 13,353.76, 18,447.06 and 12,156.76 is: 16,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.76 : 18,447.06 = 12,156.76 : x
  2. Step 2: Convert to fraction form
    13,353.76/18,447.06 = 12,156.76/x
  3. Step 3: Cross multiply
    13,353.76x = 18,447.06 × 12,156.76
  4. Step 4: Simplify right side
    13,353.76x = 224,256,481.13
  5. Step 5: Solve for x
    x = 224,256,481.13/13,353.76
  6. Step 6: Final answer
    x = 16,793.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.