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Finding the Fourth Proportional to 36,128, 49,873.38 and 21,015.16

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Solution

The fourth proportional to 36,128, 49,873.38 and 21,015.16 is: 29,010.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,128 : 49,873.38 = 21,015.16 : x
  2. Step 2: Convert to fraction form
    36,128/49,873.38 = 21,015.16/x
  3. Step 3: Cross multiply
    36,128x = 49,873.38 × 21,015.16
  4. Step 4: Simplify right side
    36,128x = 1,048,097,060.44
  5. Step 5: Solve for x
    x = 1,048,097,060.44/36,128
  6. Step 6: Final answer
    x = 29,010.66

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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.