Home / 20,317.22-28,040.36-11,365.22

Finding the Fourth Proportional to 20,317.22, 28,040.36 and 11,365.22

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Solution

The fourth proportional to 20,317.22, 28,040.36 and 11,365.22 is: 15,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.22 : 28,040.36 = 11,365.22 : x
  2. Step 2: Convert to fraction form
    20,317.22/28,040.36 = 11,365.22/x
  3. Step 3: Cross multiply
    20,317.22x = 28,040.36 × 11,365.22
  4. Step 4: Simplify right side
    20,317.22x = 318,684,860.28
  5. Step 5: Solve for x
    x = 318,684,860.28/20,317.22
  6. Step 6: Final answer
    x = 15,685.46

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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.