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Finding the Fourth Proportional to 13,269.67, 18,315.09 and 10,392.67

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Solution

The fourth proportional to 13,269.67, 18,315.09 and 10,392.67 is: 14,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.67 : 18,315.09 = 10,392.67 : x
  2. Step 2: Convert to fraction form
    13,269.67/18,315.09 = 10,392.67/x
  3. Step 3: Cross multiply
    13,269.67x = 18,315.09 × 10,392.67
  4. Step 4: Simplify right side
    13,269.67x = 190,342,686.39
  5. Step 5: Solve for x
    x = 190,342,686.39/13,269.67
  6. Step 6: Final answer
    x = 14,344.19

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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.