Home / 20,965.68-28,936.76-12,019.18

Finding the Fourth Proportional to 20,965.68, 28,936.76 and 12,019.18

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Solution

The fourth proportional to 20,965.68, 28,936.76 and 12,019.18 is: 16,588.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.68 : 28,936.76 = 12,019.18 : x
  2. Step 2: Convert to fraction form
    20,965.68/28,936.76 = 12,019.18/x
  3. Step 3: Cross multiply
    20,965.68x = 28,936.76 × 12,019.18
  4. Step 4: Simplify right side
    20,965.68x = 347,796,127.06
  5. Step 5: Solve for x
    x = 347,796,127.06/20,965.68
  6. Step 6: Final answer
    x = 16,588.83

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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.