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Finding the Fourth Proportional to 38,141, 52,634.58 and 21,379.40

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Solution

The fourth proportional to 38,141, 52,634.58 and 21,379.40 is: 29,503.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,141 : 52,634.58 = 21,379.40 : x
  2. Step 2: Convert to fraction form
    38,141/52,634.58 = 21,379.40/x
  3. Step 3: Cross multiply
    38,141x = 52,634.58 × 21,379.40
  4. Step 4: Simplify right side
    38,141x = 1,125,295,739.65
  5. Step 5: Solve for x
    x = 1,125,295,739.65/38,141
  6. Step 6: Final answer
    x = 29,503.57

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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.