Home / 13,311.56-19,956.81-6,644.63

Finding the Fourth Proportional to 13,311.56, 19,956.81 and 6,644.63

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Solution

The fourth proportional to 13,311.56, 19,956.81 and 6,644.63 is: 9,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.56 : 19,956.81 = 6,644.63 : x
  2. Step 2: Convert to fraction form
    13,311.56/19,956.81 = 6,644.63/x
  3. Step 3: Cross multiply
    13,311.56x = 19,956.81 × 6,644.63
  4. Step 4: Simplify right side
    13,311.56x = 132,605,693.24
  5. Step 5: Solve for x
    x = 132,605,693.24/13,311.56
  6. Step 6: Final answer
    x = 9,961.70

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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.