Home / 27,723.76-38,260.42-15,787.60

Finding the Fourth Proportional to 27,723.76, 38,260.42 and 15,787.60

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Solution

The fourth proportional to 27,723.76, 38,260.42 and 15,787.60 is: 21,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.76 : 38,260.42 = 15,787.60 : x
  2. Step 2: Convert to fraction form
    27,723.76/38,260.42 = 15,787.60/x
  3. Step 3: Cross multiply
    27,723.76x = 38,260.42 × 15,787.60
  4. Step 4: Simplify right side
    27,723.76x = 604,040,206.79
  5. Step 5: Solve for x
    x = 604,040,206.79/27,723.76
  6. Step 6: Final answer
    x = 21,787.82

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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.