Home / 37,128.72-51,237.60-20,362.80

Finding the Fourth Proportional to 37,128.72, 51,237.60 and 20,362.80

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Solution

The fourth proportional to 37,128.72, 51,237.60 and 20,362.80 is: 28,100.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,128.72 : 51,237.60 = 20,362.80 : x
  2. Step 2: Convert to fraction form
    37,128.72/51,237.60 = 20,362.80/x
  3. Step 3: Cross multiply
    37,128.72x = 51,237.60 × 20,362.80
  4. Step 4: Simplify right side
    37,128.72x = 1,043,341,001.28
  5. Step 5: Solve for x
    x = 1,043,341,001.28/37,128.72
  6. Step 6: Final answer
    x = 28,100.65

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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.