Home / 21,971.02-32,961.38-12,105.22

Finding the Fourth Proportional to 21,971.02, 32,961.38 and 12,105.22

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Solution

The fourth proportional to 21,971.02, 32,961.38 and 12,105.22 is: 18,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.02 : 32,961.38 = 12,105.22 : x
  2. Step 2: Convert to fraction form
    21,971.02/32,961.38 = 12,105.22/x
  3. Step 3: Cross multiply
    21,971.02x = 32,961.38 × 12,105.22
  4. Step 4: Simplify right side
    21,971.02x = 399,004,756.40
  5. Step 5: Solve for x
    x = 399,004,756.40/21,971.02
  6. Step 6: Final answer
    x = 18,160.50

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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.