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Finding the Fourth Proportional to 13,243.60, 19,942.53 and 9,787.60

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Solution

The fourth proportional to 13,243.60, 19,942.53 and 9,787.60 is: 14,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.60 : 19,942.53 = 9,787.60 : x
  2. Step 2: Convert to fraction form
    13,243.60/19,942.53 = 9,787.60/x
  3. Step 3: Cross multiply
    13,243.60x = 19,942.53 × 9,787.60
  4. Step 4: Simplify right side
    13,243.60x = 195,189,506.63
  5. Step 5: Solve for x
    x = 195,189,506.63/13,243.60
  6. Step 6: Final answer
    x = 14,738.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.