Home / 13,800.68-19,049.28-8,135.12

Finding the Fourth Proportional to 13,800.68, 19,049.28 and 8,135.12

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Solution

The fourth proportional to 13,800.68, 19,049.28 and 8,135.12 is: 11,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.68 : 19,049.28 = 8,135.12 : x
  2. Step 2: Convert to fraction form
    13,800.68/19,049.28 = 8,135.12/x
  3. Step 3: Cross multiply
    13,800.68x = 19,049.28 × 8,135.12
  4. Step 4: Simplify right side
    13,800.68x = 154,968,178.71
  5. Step 5: Solve for x
    x = 154,968,178.71/13,800.68
  6. Step 6: Final answer
    x = 11,229.02

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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.