Home / 20,355.66-30,533.91-13,380.15

Finding the Fourth Proportional to 20,355.66, 30,533.91 and 13,380.15

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Solution

The fourth proportional to 20,355.66, 30,533.91 and 13,380.15 is: 20,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.66 : 30,533.91 = 13,380.15 : x
  2. Step 2: Convert to fraction form
    20,355.66/30,533.91 = 13,380.15/x
  3. Step 3: Cross multiply
    20,355.66x = 30,533.91 × 13,380.15
  4. Step 4: Simplify right side
    20,355.66x = 408,548,295.89
  5. Step 5: Solve for x
    x = 408,548,295.89/20,355.66
  6. Step 6: Final answer
    x = 20,070.50

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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.