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Finding the Fourth Proportional to 13,241.16, 18,272.79 and 7,272.99

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Solution

The fourth proportional to 13,241.16, 18,272.79 and 7,272.99 is: 10,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,241.16 : 18,272.79 = 7,272.99 : x
  2. Step 2: Convert to fraction form
    13,241.16/18,272.79 = 7,272.99/x
  3. Step 3: Cross multiply
    13,241.16x = 18,272.79 × 7,272.99
  4. Step 4: Simplify right side
    13,241.16x = 132,897,818.94
  5. Step 5: Solve for x
    x = 132,897,818.94/13,241.16
  6. Step 6: Final answer
    x = 10,036.72

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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.