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Finding the Fourth Proportional to 14,172.60, 19,557.72 and 7,884.84

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Solution

The fourth proportional to 14,172.60, 19,557.72 and 7,884.84 is: 10,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.60 : 19,557.72 = 7,884.84 : x
  2. Step 2: Convert to fraction form
    14,172.60/19,557.72 = 7,884.84/x
  3. Step 3: Cross multiply
    14,172.60x = 19,557.72 × 7,884.84
  4. Step 4: Simplify right side
    14,172.60x = 154,209,492.96
  5. Step 5: Solve for x
    x = 154,209,492.96/14,172.60
  6. Step 6: Final answer
    x = 10,880.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.