Home / 14,936.16-20,611.38-8,221.72

Finding the Fourth Proportional to 14,936.16, 20,611.38 and 8,221.72

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Solution

The fourth proportional to 14,936.16, 20,611.38 and 8,221.72 is: 11,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.16 : 20,611.38 = 8,221.72 : x
  2. Step 2: Convert to fraction form
    14,936.16/20,611.38 = 8,221.72/x
  3. Step 3: Cross multiply
    14,936.16x = 20,611.38 × 8,221.72
  4. Step 4: Simplify right side
    14,936.16x = 169,460,995.17
  5. Step 5: Solve for x
    x = 169,460,995.17/14,936.16
  6. Step 6: Final answer
    x = 11,345.69

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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.