Home / 21,874.77-30,183.93-12,313.26

Finding the Fourth Proportional to 21,874.77, 30,183.93 and 12,313.26

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Solution

The fourth proportional to 21,874.77, 30,183.93 and 12,313.26 is: 16,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.77 : 30,183.93 = 12,313.26 : x
  2. Step 2: Convert to fraction form
    21,874.77/30,183.93 = 12,313.26/x
  3. Step 3: Cross multiply
    21,874.77x = 30,183.93 × 12,313.26
  4. Step 4: Simplify right side
    21,874.77x = 371,662,577.91
  5. Step 5: Solve for x
    x = 371,662,577.91/21,874.77
  6. Step 6: Final answer
    x = 16,990.47

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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.