Home / 19,956.20-29,948.70-11,181.80

Finding the Fourth Proportional to 19,956.20, 29,948.70 and 11,181.80

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Solution

The fourth proportional to 19,956.20, 29,948.70 and 11,181.80 is: 16,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.20 : 29,948.70 = 11,181.80 : x
  2. Step 2: Convert to fraction form
    19,956.20/29,948.70 = 11,181.80/x
  3. Step 3: Cross multiply
    19,956.20x = 29,948.70 × 11,181.80
  4. Step 4: Simplify right side
    19,956.20x = 334,880,373.66
  5. Step 5: Solve for x
    x = 334,880,373.66/19,956.20
  6. Step 6: Final answer
    x = 16,780.77

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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.