Home / 27,787.10-38,346.19-15,211.85

Finding the Fourth Proportional to 27,787.10, 38,346.19 and 15,211.85

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Solution

The fourth proportional to 27,787.10, 38,346.19 and 15,211.85 is: 20,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.10 : 38,346.19 = 15,211.85 : x
  2. Step 2: Convert to fraction form
    27,787.10/38,346.19 = 15,211.85/x
  3. Step 3: Cross multiply
    27,787.10x = 38,346.19 × 15,211.85
  4. Step 4: Simplify right side
    27,787.10x = 583,316,336.65
  5. Step 5: Solve for x
    x = 583,316,336.65/27,787.10
  6. Step 6: Final answer
    x = 20,992.35

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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.