Home / 13,915.24-20,860.98-5,148.52

Finding the Fourth Proportional to 13,915.24, 20,860.98 and 5,148.52

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Solution

The fourth proportional to 13,915.24, 20,860.98 and 5,148.52 is: 7,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.24 : 20,860.98 = 5,148.52 : x
  2. Step 2: Convert to fraction form
    13,915.24/20,860.98 = 5,148.52/x
  3. Step 3: Cross multiply
    13,915.24x = 20,860.98 × 5,148.52
  4. Step 4: Simplify right side
    13,915.24x = 107,403,172.75
  5. Step 5: Solve for x
    x = 107,403,172.75/13,915.24
  6. Step 6: Final answer
    x = 7,718.38

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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.