Home / 21,515.34-29,689.77-11,954.52

Finding the Fourth Proportional to 21,515.34, 29,689.77 and 11,954.52

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Solution

The fourth proportional to 21,515.34, 29,689.77 and 11,954.52 is: 16,496.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.34 : 29,689.77 = 11,954.52 : x
  2. Step 2: Convert to fraction form
    21,515.34/29,689.77 = 11,954.52/x
  3. Step 3: Cross multiply
    21,515.34x = 29,689.77 × 11,954.52
  4. Step 4: Simplify right side
    21,515.34x = 354,926,949.26
  5. Step 5: Solve for x
    x = 354,926,949.26/21,515.34
  6. Step 6: Final answer
    x = 16,496.46

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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.