Home / 28,409.63-42,620.59-10,879.46

Finding the Fourth Proportional to 28,409.63, 42,620.59 and 10,879.46

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Solution

The fourth proportional to 28,409.63, 42,620.59 and 10,879.46 is: 16,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.63 : 42,620.59 = 10,879.46 : x
  2. Step 2: Convert to fraction form
    28,409.63/42,620.59 = 10,879.46/x
  3. Step 3: Cross multiply
    28,409.63x = 42,620.59 × 10,879.46
  4. Step 4: Simplify right side
    28,409.63x = 463,688,790.98
  5. Step 5: Solve for x
    x = 463,688,790.98/28,409.63
  6. Step 6: Final answer
    x = 16,321.54

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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.