Home / 20,817.37-31,236.30-9,722.45

Finding the Fourth Proportional to 20,817.37, 31,236.30 and 9,722.45

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Solution

The fourth proportional to 20,817.37, 31,236.30 and 9,722.45 is: 14,588.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.37 : 31,236.30 = 9,722.45 : x
  2. Step 2: Convert to fraction form
    20,817.37/31,236.30 = 9,722.45/x
  3. Step 3: Cross multiply
    20,817.37x = 31,236.30 × 9,722.45
  4. Step 4: Simplify right side
    20,817.37x = 303,693,364.94
  5. Step 5: Solve for x
    x = 303,693,364.94/20,817.37
  6. Step 6: Final answer
    x = 14,588.46

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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.