Home / 37,128.47-51,237.38-21,212.87

Finding the Fourth Proportional to 37,128.47, 51,237.38 and 21,212.87

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Solution

The fourth proportional to 37,128.47, 51,237.38 and 21,212.87 is: 29,273.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,128.47 : 51,237.38 = 21,212.87 : x
  2. Step 2: Convert to fraction form
    37,128.47/51,237.38 = 21,212.87/x
  3. Step 3: Cross multiply
    37,128.47x = 51,237.38 × 21,212.87
  4. Step 4: Simplify right side
    37,128.47x = 1,086,891,775.02
  5. Step 5: Solve for x
    x = 1,086,891,775.02/37,128.47
  6. Step 6: Final answer
    x = 29,273.81

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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.