Home / 13,283.80-19,922.51-3,921.28

Finding the Fourth Proportional to 13,283.80, 19,922.51 and 3,921.28

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Solution

The fourth proportional to 13,283.80, 19,922.51 and 3,921.28 is: 5,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.80 : 19,922.51 = 3,921.28 : x
  2. Step 2: Convert to fraction form
    13,283.80/19,922.51 = 3,921.28/x
  3. Step 3: Cross multiply
    13,283.80x = 19,922.51 × 3,921.28
  4. Step 4: Simplify right side
    13,283.80x = 78,121,700.01
  5. Step 5: Solve for x
    x = 78,121,700.01/13,283.80
  6. Step 6: Final answer
    x = 5,880.98

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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.