Home / 19,405.07-26,781.89-11,855.76

Finding the Fourth Proportional to 19,405.07, 26,781.89 and 11,855.76

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Solution

The fourth proportional to 19,405.07, 26,781.89 and 11,855.76 is: 16,362.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,405.07 : 26,781.89 = 11,855.76 : x
  2. Step 2: Convert to fraction form
    19,405.07/26,781.89 = 11,855.76/x
  3. Step 3: Cross multiply
    19,405.07x = 26,781.89 × 11,855.76
  4. Step 4: Simplify right side
    19,405.07x = 317,519,600.91
  5. Step 5: Solve for x
    x = 317,519,600.91/19,405.07
  6. Step 6: Final answer
    x = 16,362.72

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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.