Home / 28,879.81-43,321.26-9,159.94

Finding the Fourth Proportional to 28,879.81, 43,321.26 and 9,159.94

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Solution

The fourth proportional to 28,879.81, 43,321.26 and 9,159.94 is: 13,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.81 : 43,321.26 = 9,159.94 : x
  2. Step 2: Convert to fraction form
    28,879.81/43,321.26 = 9,159.94/x
  3. Step 3: Cross multiply
    28,879.81x = 43,321.26 × 9,159.94
  4. Step 4: Simplify right side
    28,879.81x = 396,820,142.32
  5. Step 5: Solve for x
    x = 396,820,142.32/28,879.81
  6. Step 6: Final answer
    x = 13,740.40

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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.