Home / 20,155.91-30,231.81-5,366.32

Finding the Fourth Proportional to 20,155.91, 30,231.81 and 5,366.32

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Solution

The fourth proportional to 20,155.91, 30,231.81 and 5,366.32 is: 8,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.91 : 30,231.81 = 5,366.32 : x
  2. Step 2: Convert to fraction form
    20,155.91/30,231.81 = 5,366.32/x
  3. Step 3: Cross multiply
    20,155.91x = 30,231.81 × 5,366.32
  4. Step 4: Simplify right side
    20,155.91x = 162,233,491.06
  5. Step 5: Solve for x
    x = 162,233,491.06/20,155.91
  6. Step 6: Final answer
    x = 8,048.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.