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Finding the Fourth Proportional to 12,609.64, 18,895.11 and 7,346.26

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Solution

The fourth proportional to 12,609.64, 18,895.11 and 7,346.26 is: 11,008.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.64 : 18,895.11 = 7,346.26 : x
  2. Step 2: Convert to fraction form
    12,609.64/18,895.11 = 7,346.26/x
  3. Step 3: Cross multiply
    12,609.64x = 18,895.11 × 7,346.26
  4. Step 4: Simplify right side
    12,609.64x = 138,808,390.79
  5. Step 5: Solve for x
    x = 138,808,390.79/12,609.64
  6. Step 6: Final answer
    x = 11,008.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.