Home / 13,998.53-21,002.91-6,505.55

Finding the Fourth Proportional to 13,998.53, 21,002.91 and 6,505.55

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Solution

The fourth proportional to 13,998.53, 21,002.91 and 6,505.55 is: 9,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.53 : 21,002.91 = 6,505.55 : x
  2. Step 2: Convert to fraction form
    13,998.53/21,002.91 = 6,505.55/x
  3. Step 3: Cross multiply
    13,998.53x = 21,002.91 × 6,505.55
  4. Step 4: Simplify right side
    13,998.53x = 136,635,481.15
  5. Step 5: Solve for x
    x = 136,635,481.15/13,998.53
  6. Step 6: Final answer
    x = 9,760.70

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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.