Home / 28,723.56-43,085.28-7,947

Finding the Fourth Proportional to 28,723.56, 43,085.28 and 7,947

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Solution

The fourth proportional to 28,723.56, 43,085.28 and 7,947 is: 11,920.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.56 : 43,085.28 = 7,947 : x
  2. Step 2: Convert to fraction form
    28,723.56/43,085.28 = 7,947/x
  3. Step 3: Cross multiply
    28,723.56x = 43,085.28 × 7,947
  4. Step 4: Simplify right side
    28,723.56x = 342,398,720.16
  5. Step 5: Solve for x
    x = 342,398,720.16/28,723.56
  6. Step 6: Final answer
    x = 11,920.48

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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.