Home / 28,722.25-43,085.81-7,945.75

Finding the Fourth Proportional to 28,722.25, 43,085.81 and 7,945.75

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Solution

The fourth proportional to 28,722.25, 43,085.81 and 7,945.75 is: 11,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.25 : 43,085.81 = 7,945.75 : x
  2. Step 2: Convert to fraction form
    28,722.25/43,085.81 = 7,945.75/x
  3. Step 3: Cross multiply
    28,722.25x = 43,085.81 × 7,945.75
  4. Step 4: Simplify right side
    28,722.25x = 342,349,074.81
  5. Step 5: Solve for x
    x = 342,349,074.81/28,722.25
  6. Step 6: Final answer
    x = 11,919.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.