Home / 20,899.06-28,840.70-11,946.75

Finding the Fourth Proportional to 20,899.06, 28,840.70 and 11,946.75

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Solution

The fourth proportional to 20,899.06, 28,840.70 and 11,946.75 is: 16,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.06 : 28,840.70 = 11,946.75 : x
  2. Step 2: Convert to fraction form
    20,899.06/28,840.70 = 11,946.75/x
  3. Step 3: Cross multiply
    20,899.06x = 28,840.70 × 11,946.75
  4. Step 4: Simplify right side
    20,899.06x = 344,552,632.73
  5. Step 5: Solve for x
    x = 344,552,632.73/20,899.06
  6. Step 6: Final answer
    x = 16,486.51

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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.