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Finding the Fourth Proportional to 28,151.88, 38,849.04 and 15,576.63

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Solution

The fourth proportional to 28,151.88, 38,849.04 and 15,576.63 is: 21,495.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.88 : 38,849.04 = 15,576.63 : x
  2. Step 2: Convert to fraction form
    28,151.88/38,849.04 = 15,576.63/x
  3. Step 3: Cross multiply
    28,151.88x = 38,849.04 × 15,576.63
  4. Step 4: Simplify right side
    28,151.88x = 605,137,121.94
  5. Step 5: Solve for x
    x = 605,137,121.94/28,151.88
  6. Step 6: Final answer
    x = 21,495.44

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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.