Home / 19,398.20-26,768.84-11,857.20

Finding the Fourth Proportional to 19,398.20, 26,768.84 and 11,857.20

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Solution

The fourth proportional to 19,398.20, 26,768.84 and 11,857.20 is: 16,362.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.20 : 26,768.84 = 11,857.20 : x
  2. Step 2: Convert to fraction form
    19,398.20/26,768.84 = 11,857.20/x
  3. Step 3: Cross multiply
    19,398.20x = 26,768.84 × 11,857.20
  4. Step 4: Simplify right side
    19,398.20x = 317,403,489.65
  5. Step 5: Solve for x
    x = 317,403,489.65/19,398.20
  6. Step 6: Final answer
    x = 16,362.52

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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.