Home / 20,258.52-27,960.36-12,711.36

Finding the Fourth Proportional to 20,258.52, 27,960.36 and 12,711.36

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Solution

The fourth proportional to 20,258.52, 27,960.36 and 12,711.36 is: 17,543.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.52 : 27,960.36 = 12,711.36 : x
  2. Step 2: Convert to fraction form
    20,258.52/27,960.36 = 12,711.36/x
  3. Step 3: Cross multiply
    20,258.52x = 27,960.36 × 12,711.36
  4. Step 4: Simplify right side
    20,258.52x = 355,414,201.69
  5. Step 5: Solve for x
    x = 355,414,201.69/20,258.52
  6. Step 6: Final answer
    x = 17,543.94

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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.