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Finding the Fourth Proportional to 18,561.69, 25,606.53 and 13,517.82

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Solution

The fourth proportional to 18,561.69, 25,606.53 and 13,517.82 is: 18,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.69 : 25,606.53 = 13,517.82 : x
  2. Step 2: Convert to fraction form
    18,561.69/25,606.53 = 13,517.82/x
  3. Step 3: Cross multiply
    18,561.69x = 25,606.53 × 13,517.82
  4. Step 4: Simplify right side
    18,561.69x = 346,144,463.36
  5. Step 5: Solve for x
    x = 346,144,463.36/18,561.69
  6. Step 6: Final answer
    x = 18,648.33

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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.