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Finding the Fourth Proportional to 13,141, 18,134.58 and 8,956.56

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Solution

The fourth proportional to 13,141, 18,134.58 and 8,956.56 is: 12,360.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141 : 18,134.58 = 8,956.56 : x
  2. Step 2: Convert to fraction form
    13,141/18,134.58 = 8,956.56/x
  3. Step 3: Cross multiply
    13,141x = 18,134.58 × 8,956.56
  4. Step 4: Simplify right side
    13,141x = 162,423,453.84
  5. Step 5: Solve for x
    x = 162,423,453.84/13,141
  6. Step 6: Final answer
    x = 12,360.05

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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.