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Finding the Fourth Proportional to 38,633.66, 53,311.88 and 21,404.88

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Solution

The fourth proportional to 38,633.66, 53,311.88 and 21,404.88 is: 29,537.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,633.66 : 53,311.88 = 21,404.88 : x
  2. Step 2: Convert to fraction form
    38,633.66/53,311.88 = 21,404.88/x
  3. Step 3: Cross multiply
    38,633.66x = 53,311.88 × 21,404.88
  4. Step 4: Simplify right side
    38,633.66x = 1,141,134,627.53
  5. Step 5: Solve for x
    x = 1,141,134,627.53/38,633.66
  6. Step 6: Final answer
    x = 29,537.32

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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.