Home / 21,166.23-29,201.67-12,668.61

Finding the Fourth Proportional to 21,166.23, 29,201.67 and 12,668.61

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Solution

The fourth proportional to 21,166.23, 29,201.67 and 12,668.61 is: 17,478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.23 : 29,201.67 = 12,668.61 : x
  2. Step 2: Convert to fraction form
    21,166.23/29,201.67 = 12,668.61/x
  3. Step 3: Cross multiply
    21,166.23x = 29,201.67 × 12,668.61
  4. Step 4: Simplify right side
    21,166.23x = 369,944,568.58
  5. Step 5: Solve for x
    x = 369,944,568.58/21,166.23
  6. Step 6: Final answer
    x = 17,478.06

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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.