Home / 22,161.09-30,582.31-12,729.66

Finding the Fourth Proportional to 22,161.09, 30,582.31 and 12,729.66

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Solution

The fourth proportional to 22,161.09, 30,582.31 and 12,729.66 is: 17,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.09 : 30,582.31 = 12,729.66 : x
  2. Step 2: Convert to fraction form
    22,161.09/30,582.31 = 12,729.66/x
  3. Step 3: Cross multiply
    22,161.09x = 30,582.31 × 12,729.66
  4. Step 4: Simplify right side
    22,161.09x = 389,302,285.67
  5. Step 5: Solve for x
    x = 389,302,285.67/22,161.09
  6. Step 6: Final answer
    x = 17,566.93

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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.