Home / 13,915.06-20,862.87-5,148.84

Finding the Fourth Proportional to 13,915.06, 20,862.87 and 5,148.84

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Solution

The fourth proportional to 13,915.06, 20,862.87 and 5,148.84 is: 7,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.06 : 20,862.87 = 5,148.84 : x
  2. Step 2: Convert to fraction form
    13,915.06/20,862.87 = 5,148.84/x
  3. Step 3: Cross multiply
    13,915.06x = 20,862.87 × 5,148.84
  4. Step 4: Simplify right side
    13,915.06x = 107,419,579.57
  5. Step 5: Solve for x
    x = 107,419,579.57/13,915.06
  6. Step 6: Final answer
    x = 7,719.66

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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.