Home / 19,876.32-27,440.37-11,920.50

Finding the Fourth Proportional to 19,876.32, 27,440.37 and 11,920.50

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Solution

The fourth proportional to 19,876.32, 27,440.37 and 11,920.50 is: 16,456.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.32 : 27,440.37 = 11,920.50 : x
  2. Step 2: Convert to fraction form
    19,876.32/27,440.37 = 11,920.50/x
  3. Step 3: Cross multiply
    19,876.32x = 27,440.37 × 11,920.50
  4. Step 4: Simplify right side
    19,876.32x = 327,102,930.59
  5. Step 5: Solve for x
    x = 327,102,930.59/19,876.32
  6. Step 6: Final answer
    x = 16,456.92

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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.