Home / 28,661.57-42,991.94-20,193.07

Finding the Fourth Proportional to 28,661.57, 42,991.94 and 20,193.07

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Solution

The fourth proportional to 28,661.57, 42,991.94 and 20,193.07 is: 30,289.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.57 : 42,991.94 = 20,193.07 : x
  2. Step 2: Convert to fraction form
    28,661.57/42,991.94 = 20,193.07/x
  3. Step 3: Cross multiply
    28,661.57x = 42,991.94 × 20,193.07
  4. Step 4: Simplify right side
    28,661.57x = 868,139,095.89
  5. Step 5: Solve for x
    x = 868,139,095.89/28,661.57
  6. Step 6: Final answer
    x = 30,289.31

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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.