Home / 12,731.22-18,965.57-12,344.31

Finding the Fourth Proportional to 12,731.22, 18,965.57 and 12,344.31

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Solution

The fourth proportional to 12,731.22, 18,965.57 and 12,344.31 is: 18,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.22 : 18,965.57 = 12,344.31 : x
  2. Step 2: Convert to fraction form
    12,731.22/18,965.57 = 12,344.31/x
  3. Step 3: Cross multiply
    12,731.22x = 18,965.57 × 12,344.31
  4. Step 4: Simplify right side
    12,731.22x = 234,116,813.69
  5. Step 5: Solve for x
    x = 234,116,813.69/12,731.22
  6. Step 6: Final answer
    x = 18,389.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.