Home / 21,126.88-29,154.84-11,695.44

Finding the Fourth Proportional to 21,126.88, 29,154.84 and 11,695.44

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Solution

The fourth proportional to 21,126.88, 29,154.84 and 11,695.44 is: 16,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.88 : 29,154.84 = 11,695.44 : x
  2. Step 2: Convert to fraction form
    21,126.88/29,154.84 = 11,695.44/x
  3. Step 3: Cross multiply
    21,126.88x = 29,154.84 × 11,695.44
  4. Step 4: Simplify right side
    21,126.88x = 340,978,583.41
  5. Step 5: Solve for x
    x = 340,978,583.41/21,126.88
  6. Step 6: Final answer
    x = 16,139.57

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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.