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Finding the Fourth Proportional to 28,600.49, 42,887.07 and 8,879.22

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Solution

The fourth proportional to 28,600.49, 42,887.07 and 8,879.22 is: 13,314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.49 : 42,887.07 = 8,879.22 : x
  2. Step 2: Convert to fraction form
    28,600.49/42,887.07 = 8,879.22/x
  3. Step 3: Cross multiply
    28,600.49x = 42,887.07 × 8,879.22
  4. Step 4: Simplify right side
    28,600.49x = 380,803,729.69
  5. Step 5: Solve for x
    x = 380,803,729.69/28,600.49
  6. Step 6: Final answer
    x = 13,314.59

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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.