Home / 18,619.80-27,939.18-12,384.18

Finding the Fourth Proportional to 18,619.80, 27,939.18 and 12,384.18

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Solution

The fourth proportional to 18,619.80, 27,939.18 and 12,384.18 is: 18,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.80 : 27,939.18 = 12,384.18 : x
  2. Step 2: Convert to fraction form
    18,619.80/27,939.18 = 12,384.18/x
  3. Step 3: Cross multiply
    18,619.80x = 27,939.18 × 12,384.18
  4. Step 4: Simplify right side
    18,619.80x = 346,003,834.17
  5. Step 5: Solve for x
    x = 346,003,834.17/18,619.80
  6. Step 6: Final answer
    x = 18,582.58

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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.