Home / 28,223.94-42,252.78-20,861.22

Finding the Fourth Proportional to 28,223.94, 42,252.78 and 20,861.22

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Solution

The fourth proportional to 28,223.94, 42,252.78 and 20,861.22 is: 31,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.94 : 42,252.78 = 20,861.22 : x
  2. Step 2: Convert to fraction form
    28,223.94/42,252.78 = 20,861.22/x
  3. Step 3: Cross multiply
    28,223.94x = 42,252.78 × 20,861.22
  4. Step 4: Simplify right side
    28,223.94x = 881,444,539.19
  5. Step 5: Solve for x
    x = 881,444,539.19/28,223.94
  6. Step 6: Final answer
    x = 31,230.39

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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.