Home / 20,288.81-27,996.41-11,336.69

Finding the Fourth Proportional to 20,288.81, 27,996.41 and 11,336.69

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Solution

The fourth proportional to 20,288.81, 27,996.41 and 11,336.69 is: 15,643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.81 : 27,996.41 = 11,336.69 : x
  2. Step 2: Convert to fraction form
    20,288.81/27,996.41 = 11,336.69/x
  3. Step 3: Cross multiply
    20,288.81x = 27,996.41 × 11,336.69
  4. Step 4: Simplify right side
    20,288.81x = 317,386,509.64
  5. Step 5: Solve for x
    x = 317,386,509.64/20,288.81
  6. Step 6: Final answer
    x = 15,643.43

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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.