Home / 21,663.05-29,891.63-12,231.41

Finding the Fourth Proportional to 21,663.05, 29,891.63 and 12,231.41

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Solution

The fourth proportional to 21,663.05, 29,891.63 and 12,231.41 is: 16,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.05 : 29,891.63 = 12,231.41 : x
  2. Step 2: Convert to fraction form
    21,663.05/29,891.63 = 12,231.41/x
  3. Step 3: Cross multiply
    21,663.05x = 29,891.63 × 12,231.41
  4. Step 4: Simplify right side
    21,663.05x = 365,616,663.22
  5. Step 5: Solve for x
    x = 365,616,663.22/21,663.05
  6. Step 6: Final answer
    x = 16,877.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.