Home / 14,118.82-21,185.13-9,985.39

Finding the Fourth Proportional to 14,118.82, 21,185.13 and 9,985.39

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Solution

The fourth proportional to 14,118.82, 21,185.13 and 9,985.39 is: 14,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.82 : 21,185.13 = 9,985.39 : x
  2. Step 2: Convert to fraction form
    14,118.82/21,185.13 = 9,985.39/x
  3. Step 3: Cross multiply
    14,118.82x = 21,185.13 × 9,985.39
  4. Step 4: Simplify right side
    14,118.82x = 211,541,785.25
  5. Step 5: Solve for x
    x = 211,541,785.25/14,118.82
  6. Step 6: Final answer
    x = 14,982.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.