Home / 19,111.68-28,660.22-9,114.66

Finding the Fourth Proportional to 19,111.68, 28,660.22 and 9,114.66

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Solution

The fourth proportional to 19,111.68, 28,660.22 and 9,114.66 is: 13,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.68 : 28,660.22 = 9,114.66 : x
  2. Step 2: Convert to fraction form
    19,111.68/28,660.22 = 9,114.66/x
  3. Step 3: Cross multiply
    19,111.68x = 28,660.22 × 9,114.66
  4. Step 4: Simplify right side
    19,111.68x = 261,228,017.52
  5. Step 5: Solve for x
    x = 261,228,017.52/19,111.68
  6. Step 6: Final answer
    x = 13,668.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.