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Finding the Fourth Proportional to 13,369.68, 18,459.18 and 8,341.56

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Solution

The fourth proportional to 13,369.68, 18,459.18 and 8,341.56 is: 11,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.68 : 18,459.18 = 8,341.56 : x
  2. Step 2: Convert to fraction form
    13,369.68/18,459.18 = 8,341.56/x
  3. Step 3: Cross multiply
    13,369.68x = 18,459.18 × 8,341.56
  4. Step 4: Simplify right side
    13,369.68x = 153,978,357.52
  5. Step 5: Solve for x
    x = 153,978,357.52/13,369.68
  6. Step 6: Final answer
    x = 11,516.98

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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.