Home / 13,784.32-20,670.11-4,422.60

Finding the Fourth Proportional to 13,784.32, 20,670.11 and 4,422.60

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Solution

The fourth proportional to 13,784.32, 20,670.11 and 4,422.60 is: 6,631.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.32 : 20,670.11 = 4,422.60 : x
  2. Step 2: Convert to fraction form
    13,784.32/20,670.11 = 4,422.60/x
  3. Step 3: Cross multiply
    13,784.32x = 20,670.11 × 4,422.60
  4. Step 4: Simplify right side
    13,784.32x = 91,415,628.49
  5. Step 5: Solve for x
    x = 91,415,628.49/13,784.32
  6. Step 6: Final answer
    x = 6,631.86

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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.