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Finding the Fourth Proportional to 38,672.99, 57,993.08 and 13,719.32

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Solution

The fourth proportional to 38,672.99, 57,993.08 and 13,719.32 is: 20,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,672.99 : 57,993.08 = 13,719.32 : x
  2. Step 2: Convert to fraction form
    38,672.99/57,993.08 = 13,719.32/x
  3. Step 3: Cross multiply
    38,672.99x = 57,993.08 × 13,719.32
  4. Step 4: Simplify right side
    38,672.99x = 795,625,263.74
  5. Step 5: Solve for x
    x = 795,625,263.74/38,672.99
  6. Step 6: Final answer
    x = 20,573.15

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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.