Home / 20,802.33-31,211.30-10,800.84

Finding the Fourth Proportional to 20,802.33, 31,211.30 and 10,800.84

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Solution

The fourth proportional to 20,802.33, 31,211.30 and 10,800.84 is: 16,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.33 : 31,211.30 = 10,800.84 : x
  2. Step 2: Convert to fraction form
    20,802.33/31,211.30 = 10,800.84/x
  3. Step 3: Cross multiply
    20,802.33x = 31,211.30 × 10,800.84
  4. Step 4: Simplify right side
    20,802.33x = 337,108,086.45
  5. Step 5: Solve for x
    x = 337,108,086.45/20,802.33
  6. Step 6: Final answer
    x = 16,205.30

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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.