Home / 19,518.49-26,932.62-11,857.78

Finding the Fourth Proportional to 19,518.49, 26,932.62 and 11,857.78

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Solution

The fourth proportional to 19,518.49, 26,932.62 and 11,857.78 is: 16,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.49 : 26,932.62 = 11,857.78 : x
  2. Step 2: Convert to fraction form
    19,518.49/26,932.62 = 11,857.78/x
  3. Step 3: Cross multiply
    19,518.49x = 26,932.62 × 11,857.78
  4. Step 4: Simplify right side
    19,518.49x = 319,361,082.78
  5. Step 5: Solve for x
    x = 319,361,082.78/19,518.49
  6. Step 6: Final answer
    x = 16,361.98

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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.