Home / 14,936.12-20,611.38-8,221.74

Finding the Fourth Proportional to 14,936.12, 20,611.38 and 8,221.74

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Solution

The fourth proportional to 14,936.12, 20,611.38 and 8,221.74 is: 11,345.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.12 : 20,611.38 = 8,221.74 : x
  2. Step 2: Convert to fraction form
    14,936.12/20,611.38 = 8,221.74/x
  3. Step 3: Cross multiply
    14,936.12x = 20,611.38 × 8,221.74
  4. Step 4: Simplify right side
    14,936.12x = 169,461,407.40
  5. Step 5: Solve for x
    x = 169,461,407.40/14,936.12
  6. Step 6: Final answer
    x = 11,345.75

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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.