Home / 21,781.63-32,676.71-6,989.41

Finding the Fourth Proportional to 21,781.63, 32,676.71 and 6,989.41

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Solution

The fourth proportional to 21,781.63, 32,676.71 and 6,989.41 is: 10,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.63 : 32,676.71 = 6,989.41 : x
  2. Step 2: Convert to fraction form
    21,781.63/32,676.71 = 6,989.41/x
  3. Step 3: Cross multiply
    21,781.63x = 32,676.71 × 6,989.41
  4. Step 4: Simplify right side
    21,781.63x = 228,390,923.64
  5. Step 5: Solve for x
    x = 228,390,923.64/21,781.63
  6. Step 6: Final answer
    x = 10,485.48

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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.