Home / 20,838.63-31,230.76-18,199.87

Finding the Fourth Proportional to 20,838.63, 31,230.76 and 18,199.87

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Solution

The fourth proportional to 20,838.63, 31,230.76 and 18,199.87 is: 27,276.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.63 : 31,230.76 = 18,199.87 : x
  2. Step 2: Convert to fraction form
    20,838.63/31,230.76 = 18,199.87/x
  3. Step 3: Cross multiply
    20,838.63x = 31,230.76 × 18,199.87
  4. Step 4: Simplify right side
    20,838.63x = 568,395,772.00
  5. Step 5: Solve for x
    x = 568,395,772.00/20,838.63
  6. Step 6: Final answer
    x = 27,276.06

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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.