Home / 15,228.89-22,787.97-12,571.69

Finding the Fourth Proportional to 15,228.89, 22,787.97 and 12,571.69

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Solution

The fourth proportional to 15,228.89, 22,787.97 and 12,571.69 is: 18,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.89 : 22,787.97 = 12,571.69 : x
  2. Step 2: Convert to fraction form
    15,228.89/22,787.97 = 12,571.69/x
  3. Step 3: Cross multiply
    15,228.89x = 22,787.97 × 12,571.69
  4. Step 4: Simplify right side
    15,228.89x = 286,483,180.63
  5. Step 5: Solve for x
    x = 286,483,180.63/15,228.89
  6. Step 6: Final answer
    x = 18,811.82

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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.