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Finding the Fourth Proportional to 38,291.71, 52,843.90 and 21,296.67

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Solution

The fourth proportional to 38,291.71, 52,843.90 and 21,296.67 is: 29,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,291.71 : 52,843.90 = 21,296.67 : x
  2. Step 2: Convert to fraction form
    38,291.71/52,843.90 = 21,296.67/x
  3. Step 3: Cross multiply
    38,291.71x = 52,843.90 × 21,296.67
  4. Step 4: Simplify right side
    38,291.71x = 1,125,399,099.81
  5. Step 5: Solve for x
    x = 1,125,399,099.81/38,291.71
  6. Step 6: Final answer
    x = 29,390.15

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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.