Home / 30,131.90-41,583.10-18,192.92

Finding the Fourth Proportional to 30,131.90, 41,583.10 and 18,192.92

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Solution

The fourth proportional to 30,131.90, 41,583.10 and 18,192.92 is: 25,106.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.90 : 41,583.10 = 18,192.92 : x
  2. Step 2: Convert to fraction form
    30,131.90/41,583.10 = 18,192.92/x
  3. Step 3: Cross multiply
    30,131.90x = 41,583.10 × 18,192.92
  4. Step 4: Simplify right side
    30,131.90x = 756,518,011.65
  5. Step 5: Solve for x
    x = 756,518,011.65/30,131.90
  6. Step 6: Final answer
    x = 25,106.88

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Double scale
Find fourth proportional to 30,132.90, 41,584.48 and 18,193.92
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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.