Home / 18,939.80-26,136.96-10,556.30

Finding the Fourth Proportional to 18,939.80, 26,136.96 and 10,556.30

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Solution

The fourth proportional to 18,939.80, 26,136.96 and 10,556.30 is: 14,567.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.80 : 26,136.96 = 10,556.30 : x
  2. Step 2: Convert to fraction form
    18,939.80/26,136.96 = 10,556.30/x
  3. Step 3: Cross multiply
    18,939.80x = 26,136.96 × 10,556.30
  4. Step 4: Simplify right side
    18,939.80x = 275,909,590.85
  5. Step 5: Solve for x
    x = 275,909,590.85/18,939.80
  6. Step 6: Final answer
    x = 14,567.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.