Home / 28,920.43-43,376.37-7,861.69

Finding the Fourth Proportional to 28,920.43, 43,376.37 and 7,861.69

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Solution

The fourth proportional to 28,920.43, 43,376.37 and 7,861.69 is: 11,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.43 : 43,376.37 = 7,861.69 : x
  2. Step 2: Convert to fraction form
    28,920.43/43,376.37 = 7,861.69/x
  3. Step 3: Cross multiply
    28,920.43x = 43,376.37 × 7,861.69
  4. Step 4: Simplify right side
    28,920.43x = 341,011,574.27
  5. Step 5: Solve for x
    x = 341,011,574.27/28,920.43
  6. Step 6: Final answer
    x = 11,791.37

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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.