Home / 13,275-19,913.74-3,915.02

Finding the Fourth Proportional to 13,275, 19,913.74 and 3,915.02

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Solution

The fourth proportional to 13,275, 19,913.74 and 3,915.02 is: 5,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275 : 19,913.74 = 3,915.02 : x
  2. Step 2: Convert to fraction form
    13,275/19,913.74 = 3,915.02/x
  3. Step 3: Cross multiply
    13,275x = 19,913.74 × 3,915.02
  4. Step 4: Simplify right side
    13,275x = 77,962,690.37
  5. Step 5: Solve for x
    x = 77,962,690.37/13,275
  6. Step 6: Final answer
    x = 5,872.90

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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.