Home / 19,787.85-27,310.32-11,289.96

Finding the Fourth Proportional to 19,787.85, 27,310.32 and 11,289.96

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Solution

The fourth proportional to 19,787.85, 27,310.32 and 11,289.96 is: 15,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.85 : 27,310.32 = 11,289.96 : x
  2. Step 2: Convert to fraction form
    19,787.85/27,310.32 = 11,289.96/x
  3. Step 3: Cross multiply
    19,787.85x = 27,310.32 × 11,289.96
  4. Step 4: Simplify right side
    19,787.85x = 308,332,420.39
  5. Step 5: Solve for x
    x = 308,332,420.39/19,787.85
  6. Step 6: Final answer
    x = 15,581.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.