Home / 15,913.21-23,876.57-8,515.75

Finding the Fourth Proportional to 15,913.21, 23,876.57 and 8,515.75

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Solution

The fourth proportional to 15,913.21, 23,876.57 and 8,515.75 is: 12,777.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.21 : 23,876.57 = 8,515.75 : x
  2. Step 2: Convert to fraction form
    15,913.21/23,876.57 = 8,515.75/x
  3. Step 3: Cross multiply
    15,913.21x = 23,876.57 × 8,515.75
  4. Step 4: Simplify right side
    15,913.21x = 203,326,858.40
  5. Step 5: Solve for x
    x = 203,326,858.40/15,913.21
  6. Step 6: Final answer
    x = 12,777.24

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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.