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Finding the Fourth Proportional to 18,682.34, 25,777.08 and 11,123.82

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Solution

The fourth proportional to 18,682.34, 25,777.08 and 11,123.82 is: 15,348.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.34 : 25,777.08 = 11,123.82 : x
  2. Step 2: Convert to fraction form
    18,682.34/25,777.08 = 11,123.82/x
  3. Step 3: Cross multiply
    18,682.34x = 25,777.08 × 11,123.82
  4. Step 4: Simplify right side
    18,682.34x = 286,739,598.05
  5. Step 5: Solve for x
    x = 286,739,598.05/18,682.34
  6. Step 6: Final answer
    x = 15,348.17

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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.