Home / 20,384.32-30,533.28-15,399.04

Finding the Fourth Proportional to 20,384.32, 30,533.28 and 15,399.04

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Solution

The fourth proportional to 20,384.32, 30,533.28 and 15,399.04 is: 23,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.32 : 30,533.28 = 15,399.04 : x
  2. Step 2: Convert to fraction form
    20,384.32/30,533.28 = 15,399.04/x
  3. Step 3: Cross multiply
    20,384.32x = 30,533.28 × 15,399.04
  4. Step 4: Simplify right side
    20,384.32x = 470,183,200.05
  5. Step 5: Solve for x
    x = 470,183,200.05/20,384.32
  6. Step 6: Final answer
    x = 23,065.93

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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.