Home / 13,171.23-19,772.28-10,399.77

Finding the Fourth Proportional to 13,171.23, 19,772.28 and 10,399.77

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Solution

The fourth proportional to 13,171.23, 19,772.28 and 10,399.77 is: 15,611.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.23 : 19,772.28 = 10,399.77 : x
  2. Step 2: Convert to fraction form
    13,171.23/19,772.28 = 10,399.77/x
  3. Step 3: Cross multiply
    13,171.23x = 19,772.28 × 10,399.77
  4. Step 4: Simplify right side
    13,171.23x = 205,627,164.38
  5. Step 5: Solve for x
    x = 205,627,164.38/13,171.23
  6. Step 6: Final answer
    x = 15,611.84

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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.