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Finding the Fourth Proportional to 13,757.70, 18,986.58 and 10,394.58

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Solution

The fourth proportional to 13,757.70, 18,986.58 and 10,394.58 is: 14,345.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.70 : 18,986.58 = 10,394.58 : x
  2. Step 2: Convert to fraction form
    13,757.70/18,986.58 = 10,394.58/x
  3. Step 3: Cross multiply
    13,757.70x = 18,986.58 × 10,394.58
  4. Step 4: Simplify right side
    13,757.70x = 197,357,524.74
  5. Step 5: Solve for x
    x = 197,357,524.74/13,757.70
  6. Step 6: Final answer
    x = 14,345.24

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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.