Home / 18,820.08-28,180.80-13,243.23

Finding the Fourth Proportional to 18,820.08, 28,180.80 and 13,243.23

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Solution

The fourth proportional to 18,820.08, 28,180.80 and 13,243.23 is: 19,830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.08 : 28,180.80 = 13,243.23 : x
  2. Step 2: Convert to fraction form
    18,820.08/28,180.80 = 13,243.23/x
  3. Step 3: Cross multiply
    18,820.08x = 28,180.80 × 13,243.23
  4. Step 4: Simplify right side
    18,820.08x = 373,204,815.98
  5. Step 5: Solve for x
    x = 373,204,815.98/18,820.08
  6. Step 6: Final answer
    x = 19,830.14

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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.