Home / 36,128.16-49,861.44-21,980.16

Finding the Fourth Proportional to 36,128.16, 49,861.44 and 21,980.16

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Solution

The fourth proportional to 36,128.16, 49,861.44 and 21,980.16 is: 30,335.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,128.16 : 49,861.44 = 21,980.16 : x
  2. Step 2: Convert to fraction form
    36,128.16/49,861.44 = 21,980.16/x
  3. Step 3: Cross multiply
    36,128.16x = 49,861.44 × 21,980.16
  4. Step 4: Simplify right side
    36,128.16x = 1,095,962,429.03
  5. Step 5: Solve for x
    x = 1,095,962,429.03/36,128.16
  6. Step 6: Final answer
    x = 30,335.41

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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.