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Finding the Fourth Proportional to 18,649.99, 25,740.11 and 11,935.29

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Solution

The fourth proportional to 18,649.99, 25,740.11 and 11,935.29 is: 16,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.99 : 25,740.11 = 11,935.29 : x
  2. Step 2: Convert to fraction form
    18,649.99/25,740.11 = 11,935.29/x
  3. Step 3: Cross multiply
    18,649.99x = 25,740.11 × 11,935.29
  4. Step 4: Simplify right side
    18,649.99x = 307,215,677.48
  5. Step 5: Solve for x
    x = 307,215,677.48/18,649.99
  6. Step 6: Final answer
    x = 16,472.70

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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.