Home / 19,418.10-26,799.90-11,868.78

Finding the Fourth Proportional to 19,418.10, 26,799.90 and 11,868.78

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Solution

The fourth proportional to 19,418.10, 26,799.90 and 11,868.78 is: 16,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.10 : 26,799.90 = 11,868.78 : x
  2. Step 2: Convert to fraction form
    19,418.10/26,799.90 = 11,868.78/x
  3. Step 3: Cross multiply
    19,418.10x = 26,799.90 × 11,868.78
  4. Step 4: Simplify right side
    19,418.10x = 318,082,117.12
  5. Step 5: Solve for x
    x = 318,082,117.12/19,418.10
  6. Step 6: Final answer
    x = 16,380.70

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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.