Home / 13,913.87-19,189.96-12,231.71

Finding the Fourth Proportional to 13,913.87, 19,189.96 and 12,231.71

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Solution

The fourth proportional to 13,913.87, 19,189.96 and 12,231.71 is: 16,869.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.87 : 19,189.96 = 12,231.71 : x
  2. Step 2: Convert to fraction form
    13,913.87/19,189.96 = 12,231.71/x
  3. Step 3: Cross multiply
    13,913.87x = 19,189.96 × 12,231.71
  4. Step 4: Simplify right side
    13,913.87x = 234,726,025.63
  5. Step 5: Solve for x
    x = 234,726,025.63/13,913.87
  6. Step 6: Final answer
    x = 16,869.93

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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.