Home / 30,879.12-46,311.76-18,402.72

Finding the Fourth Proportional to 30,879.12, 46,311.76 and 18,402.72

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Solution

The fourth proportional to 30,879.12, 46,311.76 and 18,402.72 is: 27,599.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.12 : 46,311.76 = 18,402.72 : x
  2. Step 2: Convert to fraction form
    30,879.12/46,311.76 = 18,402.72/x
  3. Step 3: Cross multiply
    30,879.12x = 46,311.76 × 18,402.72
  4. Step 4: Simplify right side
    30,879.12x = 852,262,351.99
  5. Step 5: Solve for x
    x = 852,262,351.99/30,879.12
  6. Step 6: Final answer
    x = 27,599.96

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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.