Home / 20,063.94-27,688.74-10,990.20

Finding the Fourth Proportional to 20,063.94, 27,688.74 and 10,990.20

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Solution

The fourth proportional to 20,063.94, 27,688.74 and 10,990.20 is: 15,166.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.94 : 27,688.74 = 10,990.20 : x
  2. Step 2: Convert to fraction form
    20,063.94/27,688.74 = 10,990.20/x
  3. Step 3: Cross multiply
    20,063.94x = 27,688.74 × 10,990.20
  4. Step 4: Simplify right side
    20,063.94x = 304,304,790.35
  5. Step 5: Solve for x
    x = 304,304,790.35/20,063.94
  6. Step 6: Final answer
    x = 15,166.75

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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.