Home / 20,778.48-28,674.26-11,347.04

Finding the Fourth Proportional to 20,778.48, 28,674.26 and 11,347.04

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Solution

The fourth proportional to 20,778.48, 28,674.26 and 11,347.04 is: 15,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.48 : 28,674.26 = 11,347.04 : x
  2. Step 2: Convert to fraction form
    20,778.48/28,674.26 = 11,347.04/x
  3. Step 3: Cross multiply
    20,778.48x = 28,674.26 × 11,347.04
  4. Step 4: Simplify right side
    20,778.48x = 325,367,975.19
  5. Step 5: Solve for x
    x = 325,367,975.19/20,778.48
  6. Step 6: Final answer
    x = 15,658.89

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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.