Home / 37,045.06-51,121.66-21,129.78

Finding the Fourth Proportional to 37,045.06, 51,121.66 and 21,129.78

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Solution

The fourth proportional to 37,045.06, 51,121.66 and 21,129.78 is: 29,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,045.06 : 51,121.66 = 21,129.78 : x
  2. Step 2: Convert to fraction form
    37,045.06/51,121.66 = 21,129.78/x
  3. Step 3: Cross multiply
    37,045.06x = 51,121.66 × 21,129.78
  4. Step 4: Simplify right side
    37,045.06x = 1,080,189,429.03
  5. Step 5: Solve for x
    x = 1,080,189,429.03/37,045.06
  6. Step 6: Final answer
    x = 29,158.80

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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.