Home / 37,187.75-51,319.10-20,420.75

Finding the Fourth Proportional to 37,187.75, 51,319.10 and 20,420.75

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Solution

The fourth proportional to 37,187.75, 51,319.10 and 20,420.75 is: 28,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,187.75 : 51,319.10 = 20,420.75 : x
  2. Step 2: Convert to fraction form
    37,187.75/51,319.10 = 20,420.75/x
  3. Step 3: Cross multiply
    37,187.75x = 51,319.10 × 20,420.75
  4. Step 4: Simplify right side
    37,187.75x = 1,047,974,511.33
  5. Step 5: Solve for x
    x = 1,047,974,511.33/37,187.75
  6. Step 6: Final answer
    x = 28,180.64

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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.