Home / 20,801.87-31,210.59-10,800.37

Finding the Fourth Proportional to 20,801.87, 31,210.59 and 10,800.37

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Solution

The fourth proportional to 20,801.87, 31,210.59 and 10,800.37 is: 16,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.87 : 31,210.59 = 10,800.37 : x
  2. Step 2: Convert to fraction form
    20,801.87/31,210.59 = 10,800.37/x
  3. Step 3: Cross multiply
    20,801.87x = 31,210.59 × 10,800.37
  4. Step 4: Simplify right side
    20,801.87x = 337,085,919.92
  5. Step 5: Solve for x
    x = 337,085,919.92/20,801.87
  6. Step 6: Final answer
    x = 16,204.60

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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.