Home / 20,910.41-28,844.20-12,946.96

Finding the Fourth Proportional to 20,910.41, 28,844.20 and 12,946.96

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Solution

The fourth proportional to 20,910.41, 28,844.20 and 12,946.96 is: 17,859.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.41 : 28,844.20 = 12,946.96 : x
  2. Step 2: Convert to fraction form
    20,910.41/28,844.20 = 12,946.96/x
  3. Step 3: Cross multiply
    20,910.41x = 28,844.20 × 12,946.96
  4. Step 4: Simplify right side
    20,910.41x = 373,444,703.63
  5. Step 5: Solve for x
    x = 373,444,703.63/20,910.41
  6. Step 6: Final answer
    x = 17,859.27

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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.