Home / 28,446.03-42,628.37-20,890.32

Finding the Fourth Proportional to 28,446.03, 42,628.37 and 20,890.32

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Solution

The fourth proportional to 28,446.03, 42,628.37 and 20,890.32 is: 31,305.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.03 : 42,628.37 = 20,890.32 : x
  2. Step 2: Convert to fraction form
    28,446.03/42,628.37 = 20,890.32/x
  3. Step 3: Cross multiply
    28,446.03x = 42,628.37 × 20,890.32
  4. Step 4: Simplify right side
    28,446.03x = 890,520,342.60
  5. Step 5: Solve for x
    x = 890,520,342.60/28,446.03
  6. Step 6: Final answer
    x = 31,305.61

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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.