Home / 20,961.45-28,927.55-12,007.06

Finding the Fourth Proportional to 20,961.45, 28,927.55 and 12,007.06

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Solution

The fourth proportional to 20,961.45, 28,927.55 and 12,007.06 is: 16,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.45 : 28,927.55 = 12,007.06 : x
  2. Step 2: Convert to fraction form
    20,961.45/28,927.55 = 12,007.06/x
  3. Step 3: Cross multiply
    20,961.45x = 28,927.55 × 12,007.06
  4. Step 4: Simplify right side
    20,961.45x = 347,334,786.20
  5. Step 5: Solve for x
    x = 347,334,786.20/20,961.45
  6. Step 6: Final answer
    x = 16,570.17

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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.