Home / 11,938.55-17,915.31-4,543.65

Finding the Fourth Proportional to 11,938.55, 17,915.31 and 4,543.65

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Solution

The fourth proportional to 11,938.55, 17,915.31 and 4,543.65 is: 6,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.55 : 17,915.31 = 4,543.65 : x
  2. Step 2: Convert to fraction form
    11,938.55/17,915.31 = 4,543.65/x
  3. Step 3: Cross multiply
    11,938.55x = 17,915.31 × 4,543.65
  4. Step 4: Simplify right side
    11,938.55x = 81,400,898.28
  5. Step 5: Solve for x
    x = 81,400,898.28/11,938.55
  6. Step 6: Final answer
    x = 6,818.33

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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.