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Finding the Fourth Proportional to 28,049.63, 42,063.51 and 10,509.89

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Solution

The fourth proportional to 28,049.63, 42,063.51 and 10,509.89 is: 15,760.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.63 : 42,063.51 = 10,509.89 : x
  2. Step 2: Convert to fraction form
    28,049.63/42,063.51 = 10,509.89/x
  3. Step 3: Cross multiply
    28,049.63x = 42,063.51 × 10,509.89
  4. Step 4: Simplify right side
    28,049.63x = 442,082,863.11
  5. Step 5: Solve for x
    x = 442,082,863.11/28,049.63
  6. Step 6: Final answer
    x = 15,760.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.