Home / 20,283.28-27,990.62-11,330.91

Finding the Fourth Proportional to 20,283.28, 27,990.62 and 11,330.91

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Solution

The fourth proportional to 20,283.28, 27,990.62 and 11,330.91 is: 15,636.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.28 : 27,990.62 = 11,330.91 : x
  2. Step 2: Convert to fraction form
    20,283.28/27,990.62 = 11,330.91/x
  3. Step 3: Cross multiply
    20,283.28x = 27,990.62 × 11,330.91
  4. Step 4: Simplify right side
    20,283.28x = 317,159,196.06
  5. Step 5: Solve for x
    x = 317,159,196.06/20,283.28
  6. Step 6: Final answer
    x = 15,636.48

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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.