Home / 28,442.70-42,651.63-15,112.80

Finding the Fourth Proportional to 28,442.70, 42,651.63 and 15,112.80

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Solution

The fourth proportional to 28,442.70, 42,651.63 and 15,112.80 is: 22,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.70 : 42,651.63 = 15,112.80 : x
  2. Step 2: Convert to fraction form
    28,442.70/42,651.63 = 15,112.80/x
  3. Step 3: Cross multiply
    28,442.70x = 42,651.63 × 15,112.80
  4. Step 4: Simplify right side
    28,442.70x = 644,585,553.86
  5. Step 5: Solve for x
    x = 644,585,553.86/28,442.70
  6. Step 6: Final answer
    x = 22,662.60

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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.