Home / 21,874.93-30,184.68-12,313.63

Finding the Fourth Proportional to 21,874.93, 30,184.68 and 12,313.63

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Solution

The fourth proportional to 21,874.93, 30,184.68 and 12,313.63 is: 16,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.93 : 30,184.68 = 12,313.63 : x
  2. Step 2: Convert to fraction form
    21,874.93/30,184.68 = 12,313.63/x
  3. Step 3: Cross multiply
    21,874.93x = 30,184.68 × 12,313.63
  4. Step 4: Simplify right side
    21,874.93x = 371,682,981.19
  5. Step 5: Solve for x
    x = 371,682,981.19/21,874.93
  6. Step 6: Final answer
    x = 16,991.28

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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.