Home / 14,936.28-20,611.80-8,221.77

Finding the Fourth Proportional to 14,936.28, 20,611.80 and 8,221.77

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Solution

The fourth proportional to 14,936.28, 20,611.80 and 8,221.77 is: 11,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.28 : 20,611.80 = 8,221.77 : x
  2. Step 2: Convert to fraction form
    14,936.28/20,611.80 = 8,221.77/x
  3. Step 3: Cross multiply
    14,936.28x = 20,611.80 × 8,221.77
  4. Step 4: Simplify right side
    14,936.28x = 169,465,478.89
  5. Step 5: Solve for x
    x = 169,465,478.89/14,936.28
  6. Step 6: Final answer
    x = 11,345.90

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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.