Home / 10,186.48-15,280.63-2,790.98

Finding the Fourth Proportional to 10,186.48, 15,280.63 and 2,790.98

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Solution

The fourth proportional to 10,186.48, 15,280.63 and 2,790.98 is: 4,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.48 : 15,280.63 = 2,790.98 : x
  2. Step 2: Convert to fraction form
    10,186.48/15,280.63 = 2,790.98/x
  3. Step 3: Cross multiply
    10,186.48x = 15,280.63 × 2,790.98
  4. Step 4: Simplify right side
    10,186.48x = 42,647,932.72
  5. Step 5: Solve for x
    x = 42,647,932.72/10,186.48
  6. Step 6: Final answer
    x = 4,186.72

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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.