Home / 13,321.80-18,376.68-8,013.36

Finding the Fourth Proportional to 13,321.80, 18,376.68 and 8,013.36

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Solution

The fourth proportional to 13,321.80, 18,376.68 and 8,013.36 is: 11,053.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.80 : 18,376.68 = 8,013.36 : x
  2. Step 2: Convert to fraction form
    13,321.80/18,376.68 = 8,013.36/x
  3. Step 3: Cross multiply
    13,321.80x = 18,376.68 × 8,013.36
  4. Step 4: Simplify right side
    13,321.80x = 147,258,952.44
  5. Step 5: Solve for x
    x = 147,258,952.44/13,321.80
  6. Step 6: Final answer
    x = 11,053.98

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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.