Home / 13,309.29-18,310.22-12,940.23

Finding the Fourth Proportional to 13,309.29, 18,310.22 and 12,940.23

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Solution

The fourth proportional to 13,309.29, 18,310.22 and 12,940.23 is: 17,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.29 : 18,310.22 = 12,940.23 : x
  2. Step 2: Convert to fraction form
    13,309.29/18,310.22 = 12,940.23/x
  3. Step 3: Cross multiply
    13,309.29x = 18,310.22 × 12,940.23
  4. Step 4: Simplify right side
    13,309.29x = 236,938,458.15
  5. Step 5: Solve for x
    x = 236,938,458.15/13,309.29
  6. Step 6: Final answer
    x = 17,802.49

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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.