Home / 13,631.22-18,812.23-7,663.43

Finding the Fourth Proportional to 13,631.22, 18,812.23 and 7,663.43

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Solution

The fourth proportional to 13,631.22, 18,812.23 and 7,663.43 is: 10,576.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.22 : 18,812.23 = 7,663.43 : x
  2. Step 2: Convert to fraction form
    13,631.22/18,812.23 = 7,663.43/x
  3. Step 3: Cross multiply
    13,631.22x = 18,812.23 × 7,663.43
  4. Step 4: Simplify right side
    13,631.22x = 144,166,235.62
  5. Step 5: Solve for x
    x = 144,166,235.62/13,631.22
  6. Step 6: Final answer
    x = 10,576.18

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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.