Home / 13,251.65-19,877.27-3,390.84

Finding the Fourth Proportional to 13,251.65, 19,877.27 and 3,390.84

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Solution

The fourth proportional to 13,251.65, 19,877.27 and 3,390.84 is: 5,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.65 : 19,877.27 = 3,390.84 : x
  2. Step 2: Convert to fraction form
    13,251.65/19,877.27 = 3,390.84/x
  3. Step 3: Cross multiply
    13,251.65x = 19,877.27 × 3,390.84
  4. Step 4: Simplify right side
    13,251.65x = 67,400,625.25
  5. Step 5: Solve for x
    x = 67,400,625.25/13,251.65
  6. Step 6: Final answer
    x = 5,086.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.