Home / 19,768.95-27,280.34-11,815.56

Finding the Fourth Proportional to 19,768.95, 27,280.34 and 11,815.56

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Solution

The fourth proportional to 19,768.95, 27,280.34 and 11,815.56 is: 16,304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.95 : 27,280.34 = 11,815.56 : x
  2. Step 2: Convert to fraction form
    19,768.95/27,280.34 = 11,815.56/x
  3. Step 3: Cross multiply
    19,768.95x = 27,280.34 × 11,815.56
  4. Step 4: Simplify right side
    19,768.95x = 322,332,435.01
  5. Step 5: Solve for x
    x = 322,332,435.01/19,768.95
  6. Step 6: Final answer
    x = 16,304.99

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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.