Home / 28,129.70-42,204.27-10,604.54

Finding the Fourth Proportional to 28,129.70, 42,204.27 and 10,604.54

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Solution

The fourth proportional to 28,129.70, 42,204.27 and 10,604.54 is: 15,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.70 : 42,204.27 = 10,604.54 : x
  2. Step 2: Convert to fraction form
    28,129.70/42,204.27 = 10,604.54/x
  3. Step 3: Cross multiply
    28,129.70x = 42,204.27 × 10,604.54
  4. Step 4: Simplify right side
    28,129.70x = 447,556,658.36
  5. Step 5: Solve for x
    x = 447,556,658.36/28,129.70
  6. Step 6: Final answer
    x = 15,910.47

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1.5x scale

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.