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Finding the Fourth Proportional to 38,453.76, 57,683.36 and 13,490.88

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Solution

The fourth proportional to 38,453.76, 57,683.36 and 13,490.88 is: 20,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,453.76 : 57,683.36 = 13,490.88 : x
  2. Step 2: Convert to fraction form
    38,453.76/57,683.36 = 13,490.88/x
  3. Step 3: Cross multiply
    38,453.76x = 57,683.36 × 13,490.88
  4. Step 4: Simplify right side
    38,453.76x = 778,199,287.76
  5. Step 5: Solve for x
    x = 778,199,287.76/38,453.76
  6. Step 6: Final answer
    x = 20,237.27

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