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Finding the Fourth Proportional to 38,994.40, 58,491.60 and 10,914.40

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Solution

The fourth proportional to 38,994.40, 58,491.60 and 10,914.40 is: 16,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,994.40 : 58,491.60 = 10,914.40 : x
  2. Step 2: Convert to fraction form
    38,994.40/58,491.60 = 10,914.40/x
  3. Step 3: Cross multiply
    38,994.40x = 58,491.60 × 10,914.40
  4. Step 4: Simplify right side
    38,994.40x = 638,400,719.04
  5. Step 5: Solve for x
    x = 638,400,719.04/38,994.40
  6. Step 6: Final answer
    x = 16,371.60

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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.