Home / 19,146.29-28,689.43-12,111.44

Finding the Fourth Proportional to 19,146.29, 28,689.43 and 12,111.44

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Solution

The fourth proportional to 19,146.29, 28,689.43 and 12,111.44 is: 18,148.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.29 : 28,689.43 = 12,111.44 : x
  2. Step 2: Convert to fraction form
    19,146.29/28,689.43 = 12,111.44/x
  3. Step 3: Cross multiply
    19,146.29x = 28,689.43 × 12,111.44
  4. Step 4: Simplify right side
    19,146.29x = 347,470,351.52
  5. Step 5: Solve for x
    x = 347,470,351.52/19,146.29
  6. Step 6: Final answer
    x = 18,148.18

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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.