Home / 13,176.60-19,764.90-3,942.60

Finding the Fourth Proportional to 13,176.60, 19,764.90 and 3,942.60

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Solution

The fourth proportional to 13,176.60, 19,764.90 and 3,942.60 is: 5,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.60 : 19,764.90 = 3,942.60 : x
  2. Step 2: Convert to fraction form
    13,176.60/19,764.90 = 3,942.60/x
  3. Step 3: Cross multiply
    13,176.60x = 19,764.90 × 3,942.60
  4. Step 4: Simplify right side
    13,176.60x = 77,925,094.74
  5. Step 5: Solve for x
    x = 77,925,094.74/13,176.60
  6. Step 6: Final answer
    x = 5,913.90

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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.