Home / 22,311.45-30,790.65-12,240.31

Finding the Fourth Proportional to 22,311.45, 30,790.65 and 12,240.31

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Solution

The fourth proportional to 22,311.45, 30,790.65 and 12,240.31 is: 16,892.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.45 : 30,790.65 = 12,240.31 : x
  2. Step 2: Convert to fraction form
    22,311.45/30,790.65 = 12,240.31/x
  3. Step 3: Cross multiply
    22,311.45x = 30,790.65 × 12,240.31
  4. Step 4: Simplify right side
    22,311.45x = 376,887,101.10
  5. Step 5: Solve for x
    x = 376,887,101.10/22,311.45
  6. Step 6: Final answer
    x = 16,892.09

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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.