Home / 20,356.05-28,092.21-11,406.36

Finding the Fourth Proportional to 20,356.05, 28,092.21 and 11,406.36

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Solution

The fourth proportional to 20,356.05, 28,092.21 and 11,406.36 is: 15,741.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.05 : 28,092.21 = 11,406.36 : x
  2. Step 2: Convert to fraction form
    20,356.05/28,092.21 = 11,406.36/x
  3. Step 3: Cross multiply
    20,356.05x = 28,092.21 × 11,406.36
  4. Step 4: Simplify right side
    20,356.05x = 320,429,860.46
  5. Step 5: Solve for x
    x = 320,429,860.46/20,356.05
  6. Step 6: Final answer
    x = 15,741.26

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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.