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Finding the Fourth Proportional to 13,312.56, 18,372.24 and 7,723.56

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Solution

The fourth proportional to 13,312.56, 18,372.24 and 7,723.56 is: 10,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.56 : 18,372.24 = 7,723.56 : x
  2. Step 2: Convert to fraction form
    13,312.56/18,372.24 = 7,723.56/x
  3. Step 3: Cross multiply
    13,312.56x = 18,372.24 × 7,723.56
  4. Step 4: Simplify right side
    13,312.56x = 141,899,097.97
  5. Step 5: Solve for x
    x = 141,899,097.97/13,312.56
  6. Step 6: Final answer
    x = 10,659.04

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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.