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Finding the Fourth Proportional to 13,101.84, 18,081.08 and 7,513.92

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Solution

The fourth proportional to 13,101.84, 18,081.08 and 7,513.92 is: 10,369.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.84 : 18,081.08 = 7,513.92 : x
  2. Step 2: Convert to fraction form
    13,101.84/18,081.08 = 7,513.92/x
  3. Step 3: Cross multiply
    13,101.84x = 18,081.08 × 7,513.92
  4. Step 4: Simplify right side
    13,101.84x = 135,859,788.63
  5. Step 5: Solve for x
    x = 135,859,788.63/13,101.84
  6. Step 6: Final answer
    x = 10,369.52

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Double scale
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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.