Home / 20,983.63-31,470.60-5,990.46

Finding the Fourth Proportional to 20,983.63, 31,470.60 and 5,990.46

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Solution

The fourth proportional to 20,983.63, 31,470.60 and 5,990.46 is: 8,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.63 : 31,470.60 = 5,990.46 : x
  2. Step 2: Convert to fraction form
    20,983.63/31,470.60 = 5,990.46/x
  3. Step 3: Cross multiply
    20,983.63x = 31,470.60 × 5,990.46
  4. Step 4: Simplify right side
    20,983.63x = 188,523,370.48
  5. Step 5: Solve for x
    x = 188,523,370.48/20,983.63
  6. Step 6: Final answer
    x = 8,984.31

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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.