Home / 13,275.30-19,912.02-3,915.90

Finding the Fourth Proportional to 13,275.30, 19,912.02 and 3,915.90

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Solution

The fourth proportional to 13,275.30, 19,912.02 and 3,915.90 is: 5,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.30 : 19,912.02 = 3,915.90 : x
  2. Step 2: Convert to fraction form
    13,275.30/19,912.02 = 3,915.90/x
  3. Step 3: Cross multiply
    13,275.30x = 19,912.02 × 3,915.90
  4. Step 4: Simplify right side
    13,275.30x = 77,973,479.12
  5. Step 5: Solve for x
    x = 77,973,479.12/13,275.30
  6. Step 6: Final answer
    x = 5,873.58

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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.