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Finding the Fourth Proportional to 38,455.34, 57,689.34 and 11,800.66

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Solution

The fourth proportional to 38,455.34, 57,689.34 and 11,800.66 is: 17,702.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.34 : 57,689.34 = 11,800.66 : x
  2. Step 2: Convert to fraction form
    38,455.34/57,689.34 = 11,800.66/x
  3. Step 3: Cross multiply
    38,455.34x = 57,689.34 × 11,800.66
  4. Step 4: Simplify right side
    38,455.34x = 680,772,286.96
  5. Step 5: Solve for x
    x = 680,772,286.96/38,455.34
  6. Step 6: Final answer
    x = 17,702.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.