Home / 28,173.22-38,879.64-15,426.94

Finding the Fourth Proportional to 28,173.22, 38,879.64 and 15,426.94

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Solution

The fourth proportional to 28,173.22, 38,879.64 and 15,426.94 is: 21,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.22 : 38,879.64 = 15,426.94 : x
  2. Step 2: Convert to fraction form
    28,173.22/38,879.64 = 15,426.94/x
  3. Step 3: Cross multiply
    28,173.22x = 38,879.64 × 15,426.94
  4. Step 4: Simplify right side
    28,173.22x = 599,793,873.50
  5. Step 5: Solve for x
    x = 599,793,873.50/28,173.22
  6. Step 6: Final answer
    x = 21,289.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.