Home / 22,211.32-30,651.26-12,139.64

Finding the Fourth Proportional to 22,211.32, 30,651.26 and 12,139.64

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Solution

The fourth proportional to 22,211.32, 30,651.26 and 12,139.64 is: 16,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.32 : 30,651.26 = 12,139.64 : x
  2. Step 2: Convert to fraction form
    22,211.32/30,651.26 = 12,139.64/x
  3. Step 3: Cross multiply
    22,211.32x = 30,651.26 × 12,139.64
  4. Step 4: Simplify right side
    22,211.32x = 372,095,261.95
  5. Step 5: Solve for x
    x = 372,095,261.95/22,211.32
  6. Step 6: Final answer
    x = 16,752.51

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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.