Home / 19,747.20-29,620.80-4,956.60

Finding the Fourth Proportional to 19,747.20, 29,620.80 and 4,956.60

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Solution

The fourth proportional to 19,747.20, 29,620.80 and 4,956.60 is: 7,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,747.20 : 29,620.80 = 4,956.60 : x
  2. Step 2: Convert to fraction form
    19,747.20/29,620.80 = 4,956.60/x
  3. Step 3: Cross multiply
    19,747.20x = 29,620.80 × 4,956.60
  4. Step 4: Simplify right side
    19,747.20x = 146,818,457.28
  5. Step 5: Solve for x
    x = 146,818,457.28/19,747.20
  6. Step 6: Final answer
    x = 7,434.90

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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.