Home / 27,787.24-38,345.94-15,211.72

Finding the Fourth Proportional to 27,787.24, 38,345.94 and 15,211.72

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Solution

The fourth proportional to 27,787.24, 38,345.94 and 15,211.72 is: 20,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.24 : 38,345.94 = 15,211.72 : x
  2. Step 2: Convert to fraction form
    27,787.24/38,345.94 = 15,211.72/x
  3. Step 3: Cross multiply
    27,787.24x = 38,345.94 × 15,211.72
  4. Step 4: Simplify right side
    27,787.24x = 583,307,702.42
  5. Step 5: Solve for x
    x = 583,307,702.42/27,787.24
  6. Step 6: Final answer
    x = 20,991.93

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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.