Home / 28,352.34-39,060.72-20,380.77

Finding the Fourth Proportional to 28,352.34, 39,060.72 and 20,380.77

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Solution

The fourth proportional to 28,352.34, 39,060.72 and 20,380.77 is: 28,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.34 : 39,060.72 = 20,380.77 : x
  2. Step 2: Convert to fraction form
    28,352.34/39,060.72 = 20,380.77/x
  3. Step 3: Cross multiply
    28,352.34x = 39,060.72 × 20,380.77
  4. Step 4: Simplify right side
    28,352.34x = 796,087,550.35
  5. Step 5: Solve for x
    x = 796,087,550.35/28,352.34
  6. Step 6: Final answer
    x = 28,078.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.