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Finding the Fourth Proportional to 13,598.10, 18,765.09 and 7,631.22

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Solution

The fourth proportional to 13,598.10, 18,765.09 and 7,631.22 is: 10,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.10 : 18,765.09 = 7,631.22 : x
  2. Step 2: Convert to fraction form
    13,598.10/18,765.09 = 7,631.22/x
  3. Step 3: Cross multiply
    13,598.10x = 18,765.09 × 7,631.22
  4. Step 4: Simplify right side
    13,598.10x = 143,200,530.11
  5. Step 5: Solve for x
    x = 143,200,530.11/13,598.10
  6. Step 6: Final answer
    x = 10,530.92

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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.