Home / 12,876.06-17,764.80-7,209.96

Finding the Fourth Proportional to 12,876.06, 17,764.80 and 7,209.96

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Solution

The fourth proportional to 12,876.06, 17,764.80 and 7,209.96 is: 9,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.06 : 17,764.80 = 7,209.96 : x
  2. Step 2: Convert to fraction form
    12,876.06/17,764.80 = 7,209.96/x
  3. Step 3: Cross multiply
    12,876.06x = 17,764.80 × 7,209.96
  4. Step 4: Simplify right side
    12,876.06x = 128,083,497.41
  5. Step 5: Solve for x
    x = 128,083,497.41/12,876.06
  6. Step 6: Final answer
    x = 9,947.41

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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.