Home / 13,530.28-18,753.63-12,751.61

Finding the Fourth Proportional to 13,530.28, 18,753.63 and 12,751.61

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Solution

The fourth proportional to 13,530.28, 18,753.63 and 12,751.61 is: 17,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.28 : 18,753.63 = 12,751.61 : x
  2. Step 2: Convert to fraction form
    13,530.28/18,753.63 = 12,751.61/x
  3. Step 3: Cross multiply
    13,530.28x = 18,753.63 × 12,751.61
  4. Step 4: Simplify right side
    13,530.28x = 239,138,975.84
  5. Step 5: Solve for x
    x = 239,138,975.84/13,530.28
  6. Step 6: Final answer
    x = 17,674.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.