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Finding the Fourth Proportional to 13,694.55, 18,898.02 and 7,727.55

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Solution

The fourth proportional to 13,694.55, 18,898.02 and 7,727.55 is: 10,663.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.55 : 18,898.02 = 7,727.55 : x
  2. Step 2: Convert to fraction form
    13,694.55/18,898.02 = 7,727.55/x
  3. Step 3: Cross multiply
    13,694.55x = 18,898.02 × 7,727.55
  4. Step 4: Simplify right side
    13,694.55x = 146,035,394.45
  5. Step 5: Solve for x
    x = 146,035,394.45/13,694.55
  6. Step 6: Final answer
    x = 10,663.76

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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.