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Finding the Fourth Proportional to 28,234.80, 42,352.20 and 10,703.70

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Solution

The fourth proportional to 28,234.80, 42,352.20 and 10,703.70 is: 16,055.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.80 : 42,352.20 = 10,703.70 : x
  2. Step 2: Convert to fraction form
    28,234.80/42,352.20 = 10,703.70/x
  3. Step 3: Cross multiply
    28,234.80x = 42,352.20 × 10,703.70
  4. Step 4: Simplify right side
    28,234.80x = 453,325,243.14
  5. Step 5: Solve for x
    x = 453,325,243.14/28,234.80
  6. Step 6: Final answer
    x = 16,055.55

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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.