Home / 20,296.32-30,416.66-11,415.95

Finding the Fourth Proportional to 20,296.32, 30,416.66 and 11,415.95

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Solution

The fourth proportional to 20,296.32, 30,416.66 and 11,415.95 is: 17,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.32 : 30,416.66 = 11,415.95 : x
  2. Step 2: Convert to fraction form
    20,296.32/30,416.66 = 11,415.95/x
  3. Step 3: Cross multiply
    20,296.32x = 30,416.66 × 11,415.95
  4. Step 4: Simplify right side
    20,296.32x = 347,235,069.73
  5. Step 5: Solve for x
    x = 347,235,069.73/20,296.32
  6. Step 6: Final answer
    x = 17,108.28

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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.