Home / 13,161.27-19,648.22-12,699.96

Finding the Fourth Proportional to 13,161.27, 19,648.22 and 12,699.96

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Solution

The fourth proportional to 13,161.27, 19,648.22 and 12,699.96 is: 18,959.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.27 : 19,648.22 = 12,699.96 : x
  2. Step 2: Convert to fraction form
    13,161.27/19,648.22 = 12,699.96/x
  3. Step 3: Cross multiply
    13,161.27x = 19,648.22 × 12,699.96
  4. Step 4: Simplify right side
    13,161.27x = 249,531,544.57
  5. Step 5: Solve for x
    x = 249,531,544.57/13,161.27
  6. Step 6: Final answer
    x = 18,959.53

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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.