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Finding the Fourth Proportional to 12,609.09, 17,398.89 and 7,503.84

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Solution

The fourth proportional to 12,609.09, 17,398.89 and 7,503.84 is: 10,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.09 : 17,398.89 = 7,503.84 : x
  2. Step 2: Convert to fraction form
    12,609.09/17,398.89 = 7,503.84/x
  3. Step 3: Cross multiply
    12,609.09x = 17,398.89 × 7,503.84
  4. Step 4: Simplify right side
    12,609.09x = 130,558,486.74
  5. Step 5: Solve for x
    x = 130,558,486.74/12,609.09
  6. Step 6: Final answer
    x = 10,354.31

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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.