Home / 19,915.86-29,876.40-6,764.70

Finding the Fourth Proportional to 19,915.86, 29,876.40 and 6,764.70

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Solution

The fourth proportional to 19,915.86, 29,876.40 and 6,764.70 is: 10,147.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.86 : 29,876.40 = 6,764.70 : x
  2. Step 2: Convert to fraction form
    19,915.86/29,876.40 = 6,764.70/x
  3. Step 3: Cross multiply
    19,915.86x = 29,876.40 × 6,764.70
  4. Step 4: Simplify right side
    19,915.86x = 202,104,883.08
  5. Step 5: Solve for x
    x = 202,104,883.08/19,915.86
  6. Step 6: Final answer
    x = 10,147.94

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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.