Home / 20,996.42-31,495.77-8,514.59

Finding the Fourth Proportional to 20,996.42, 31,495.77 and 8,514.59

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Solution

The fourth proportional to 20,996.42, 31,495.77 and 8,514.59 is: 12,772.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.42 : 31,495.77 = 8,514.59 : x
  2. Step 2: Convert to fraction form
    20,996.42/31,495.77 = 8,514.59/x
  3. Step 3: Cross multiply
    20,996.42x = 31,495.77 × 8,514.59
  4. Step 4: Simplify right side
    20,996.42x = 268,173,410.81
  5. Step 5: Solve for x
    x = 268,173,410.81/20,996.42
  6. Step 6: Final answer
    x = 12,772.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.