Home / 19,591.38-29,380.86-6,440.70

Finding the Fourth Proportional to 19,591.38, 29,380.86 and 6,440.70

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Solution

The fourth proportional to 19,591.38, 29,380.86 and 6,440.70 is: 9,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,591.38 : 29,380.86 = 6,440.70 : x
  2. Step 2: Convert to fraction form
    19,591.38/29,380.86 = 6,440.70/x
  3. Step 3: Cross multiply
    19,591.38x = 29,380.86 × 6,440.70
  4. Step 4: Simplify right side
    19,591.38x = 189,233,305.00
  5. Step 5: Solve for x
    x = 189,233,305.00/19,591.38
  6. Step 6: Final answer
    x = 9,659.01

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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.