Home / 27,378.21-37,787.40-15,441.78

Finding the Fourth Proportional to 27,378.21, 37,787.40 and 15,441.78

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Solution

The fourth proportional to 27,378.21, 37,787.40 and 15,441.78 is: 21,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.21 : 37,787.40 = 15,441.78 : x
  2. Step 2: Convert to fraction form
    27,378.21/37,787.40 = 15,441.78/x
  3. Step 3: Cross multiply
    27,378.21x = 37,787.40 × 15,441.78
  4. Step 4: Simplify right side
    27,378.21x = 583,504,717.57
  5. Step 5: Solve for x
    x = 583,504,717.57/27,378.21
  6. Step 6: Final answer
    x = 21,312.74

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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.