Home / 20,237.87-27,928.19-11,285.15

Finding the Fourth Proportional to 20,237.87, 27,928.19 and 11,285.15

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Solution

The fourth proportional to 20,237.87, 27,928.19 and 11,285.15 is: 15,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.87 : 27,928.19 = 11,285.15 : x
  2. Step 2: Convert to fraction form
    20,237.87/27,928.19 = 11,285.15/x
  3. Step 3: Cross multiply
    20,237.87x = 27,928.19 × 11,285.15
  4. Step 4: Simplify right side
    20,237.87x = 315,173,701.95
  5. Step 5: Solve for x
    x = 315,173,701.95/20,237.87
  6. Step 6: Final answer
    x = 15,573.46

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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.