Home / 12,971.59-19,465.26-5,179.75

Finding the Fourth Proportional to 12,971.59, 19,465.26 and 5,179.75

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Solution

The fourth proportional to 12,971.59, 19,465.26 and 5,179.75 is: 7,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.59 : 19,465.26 = 5,179.75 : x
  2. Step 2: Convert to fraction form
    12,971.59/19,465.26 = 5,179.75/x
  3. Step 3: Cross multiply
    12,971.59x = 19,465.26 × 5,179.75
  4. Step 4: Simplify right side
    12,971.59x = 100,825,180.49
  5. Step 5: Solve for x
    x = 100,825,180.49/12,971.59
  6. Step 6: Final answer
    x = 7,772.77

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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.