Home / 28,126.88-38,846.96-19,158.80

Finding the Fourth Proportional to 28,126.88, 38,846.96 and 19,158.80

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Solution

The fourth proportional to 28,126.88, 38,846.96 and 19,158.80 is: 26,460.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.88 : 38,846.96 = 19,158.80 : x
  2. Step 2: Convert to fraction form
    28,126.88/38,846.96 = 19,158.80/x
  3. Step 3: Cross multiply
    28,126.88x = 38,846.96 × 19,158.80
  4. Step 4: Simplify right side
    28,126.88x = 744,261,137.25
  5. Step 5: Solve for x
    x = 744,261,137.25/28,126.88
  6. Step 6: Final answer
    x = 26,460.85

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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.