Home / 36,890.09-55,220.59-19,981.10

Finding the Fourth Proportional to 36,890.09, 55,220.59 and 19,981.10

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Solution

The fourth proportional to 36,890.09, 55,220.59 and 19,981.10 is: 29,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,890.09 : 55,220.59 = 19,981.10 : x
  2. Step 2: Convert to fraction form
    36,890.09/55,220.59 = 19,981.10/x
  3. Step 3: Cross multiply
    36,890.09x = 55,220.59 × 19,981.10
  4. Step 4: Simplify right side
    36,890.09x = 1,103,368,188.12
  5. Step 5: Solve for x
    x = 1,103,368,188.12/36,890.09
  6. Step 6: Final answer
    x = 29,909.61

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Double scale
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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.