Home / 13,915.68-20,876.58-4,055.28

Finding the Fourth Proportional to 13,915.68, 20,876.58 and 4,055.28

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Solution

The fourth proportional to 13,915.68, 20,876.58 and 4,055.28 is: 6,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.68 : 20,876.58 = 4,055.28 : x
  2. Step 2: Convert to fraction form
    13,915.68/20,876.58 = 4,055.28/x
  3. Step 3: Cross multiply
    13,915.68x = 20,876.58 × 4,055.28
  4. Step 4: Simplify right side
    13,915.68x = 84,660,377.34
  5. Step 5: Solve for x
    x = 84,660,377.34/13,915.68
  6. Step 6: Final answer
    x = 6,083.81

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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.