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Finding the Fourth Proportional to 12,609.44, 17,403.11 and 9,619.63

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Solution

The fourth proportional to 12,609.44, 17,403.11 and 9,619.63 is: 13,276.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.44 : 17,403.11 = 9,619.63 : x
  2. Step 2: Convert to fraction form
    12,609.44/17,403.11 = 9,619.63/x
  3. Step 3: Cross multiply
    12,609.44x = 17,403.11 × 9,619.63
  4. Step 4: Simplify right side
    12,609.44x = 167,411,423.52
  5. Step 5: Solve for x
    x = 167,411,423.52/12,609.44
  6. Step 6: Final answer
    x = 13,276.68

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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.