Home / 21,969.29-30,317.43-11,897.48

Finding the Fourth Proportional to 21,969.29, 30,317.43 and 11,897.48

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Solution

The fourth proportional to 21,969.29, 30,317.43 and 11,897.48 is: 16,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.29 : 30,317.43 = 11,897.48 : x
  2. Step 2: Convert to fraction form
    21,969.29/30,317.43 = 11,897.48/x
  3. Step 3: Cross multiply
    21,969.29x = 30,317.43 × 11,897.48
  4. Step 4: Simplify right side
    21,969.29x = 360,700,865.49
  5. Step 5: Solve for x
    x = 360,700,865.49/21,969.29
  6. Step 6: Final answer
    x = 16,418.42

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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.