Home / 21,668.19-29,907.54-12,242.22

Finding the Fourth Proportional to 21,668.19, 29,907.54 and 12,242.22

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Solution

The fourth proportional to 21,668.19, 29,907.54 and 12,242.22 is: 16,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.19 : 29,907.54 = 12,242.22 : x
  2. Step 2: Convert to fraction form
    21,668.19/29,907.54 = 12,242.22/x
  3. Step 3: Cross multiply
    21,668.19x = 29,907.54 × 12,242.22
  4. Step 4: Simplify right side
    21,668.19x = 366,134,684.34
  5. Step 5: Solve for x
    x = 366,134,684.34/21,668.19
  6. Step 6: Final answer
    x = 16,897.34

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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.