Home / 13,191.84-19,787.28-3,957.60

Finding the Fourth Proportional to 13,191.84, 19,787.28 and 3,957.60

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Solution

The fourth proportional to 13,191.84, 19,787.28 and 3,957.60 is: 5,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.84 : 19,787.28 = 3,957.60 : x
  2. Step 2: Convert to fraction form
    13,191.84/19,787.28 = 3,957.60/x
  3. Step 3: Cross multiply
    13,191.84x = 19,787.28 × 3,957.60
  4. Step 4: Simplify right side
    13,191.84x = 78,310,139.33
  5. Step 5: Solve for x
    x = 78,310,139.33/13,191.84
  6. Step 6: Final answer
    x = 5,936.26

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1.5x scale

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.