Home / 20,592.86-28,403.12-13,040.42

Finding the Fourth Proportional to 20,592.86, 28,403.12 and 13,040.42

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Solution

The fourth proportional to 20,592.86, 28,403.12 and 13,040.42 is: 17,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.86 : 28,403.12 = 13,040.42 : x
  2. Step 2: Convert to fraction form
    20,592.86/28,403.12 = 13,040.42/x
  3. Step 3: Cross multiply
    20,592.86x = 28,403.12 × 13,040.42
  4. Step 4: Simplify right side
    20,592.86x = 370,388,504.70
  5. Step 5: Solve for x
    x = 370,388,504.70/20,592.86
  6. Step 6: Final answer
    x = 17,986.26

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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.