Home / 20,213.03-30,321.36-9,124.94

Finding the Fourth Proportional to 20,213.03, 30,321.36 and 9,124.94

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Solution

The fourth proportional to 20,213.03, 30,321.36 and 9,124.94 is: 13,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.03 : 30,321.36 = 9,124.94 : x
  2. Step 2: Convert to fraction form
    20,213.03/30,321.36 = 9,124.94/x
  3. Step 3: Cross multiply
    20,213.03x = 30,321.36 × 9,124.94
  4. Step 4: Simplify right side
    20,213.03x = 276,680,439.11
  5. Step 5: Solve for x
    x = 276,680,439.11/20,213.03
  6. Step 6: Final answer
    x = 13,688.23

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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.