Home / 21,003.86-31,511.15-6,967.80

Finding the Fourth Proportional to 21,003.86, 31,511.15 and 6,967.80

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Solution

The fourth proportional to 21,003.86, 31,511.15 and 6,967.80 is: 10,453.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.86 : 31,511.15 = 6,967.80 : x
  2. Step 2: Convert to fraction form
    21,003.86/31,511.15 = 6,967.80/x
  3. Step 3: Cross multiply
    21,003.86x = 31,511.15 × 6,967.80
  4. Step 4: Simplify right side
    21,003.86x = 219,563,408.39
  5. Step 5: Solve for x
    x = 219,563,408.39/21,003.86
  6. Step 6: Final answer
    x = 10,453.48

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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.