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Finding the Fourth Proportional to 13,152.99, 18,152.15 and 7,489.58

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Solution

The fourth proportional to 13,152.99, 18,152.15 and 7,489.58 is: 10,336.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.99 : 18,152.15 = 7,489.58 : x
  2. Step 2: Convert to fraction form
    13,152.99/18,152.15 = 7,489.58/x
  3. Step 3: Cross multiply
    13,152.99x = 18,152.15 × 7,489.58
  4. Step 4: Simplify right side
    13,152.99x = 135,951,851.39
  5. Step 5: Solve for x
    x = 135,951,851.39/13,152.99
  6. Step 6: Final answer
    x = 10,336.19

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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.