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Finding the Fourth Proportional to 13,654.50, 18,842.90 and 7,604.70

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Solution

The fourth proportional to 13,654.50, 18,842.90 and 7,604.70 is: 10,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.50 : 18,842.90 = 7,604.70 : x
  2. Step 2: Convert to fraction form
    13,654.50/18,842.90 = 7,604.70/x
  3. Step 3: Cross multiply
    13,654.50x = 18,842.90 × 7,604.70
  4. Step 4: Simplify right side
    13,654.50x = 143,294,601.63
  5. Step 5: Solve for x
    x = 143,294,601.63/13,654.50
  6. Step 6: Final answer
    x = 10,494.31

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1.5x scale

Why These Related Problems?

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