Home / 21,778.07-32,664.06-6,988.28

Finding the Fourth Proportional to 21,778.07, 32,664.06 and 6,988.28

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Solution

The fourth proportional to 21,778.07, 32,664.06 and 6,988.28 is: 10,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.07 : 32,664.06 = 6,988.28 : x
  2. Step 2: Convert to fraction form
    21,778.07/32,664.06 = 6,988.28/x
  3. Step 3: Cross multiply
    21,778.07x = 32,664.06 × 6,988.28
  4. Step 4: Simplify right side
    21,778.07x = 228,265,433.90
  5. Step 5: Solve for x
    x = 228,265,433.90/21,778.07
  6. Step 6: Final answer
    x = 10,481.44

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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.