Home / 13,182.98-18,190.92-7,876.76

Finding the Fourth Proportional to 13,182.98, 18,190.92 and 7,876.76

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Solution

The fourth proportional to 13,182.98, 18,190.92 and 7,876.76 is: 10,868.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.98 : 18,190.92 = 7,876.76 : x
  2. Step 2: Convert to fraction form
    13,182.98/18,190.92 = 7,876.76/x
  3. Step 3: Cross multiply
    13,182.98x = 18,190.92 × 7,876.76
  4. Step 4: Simplify right side
    13,182.98x = 143,285,511.02
  5. Step 5: Solve for x
    x = 143,285,511.02/13,182.98
  6. Step 6: Final answer
    x = 10,868.98

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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.