Home / 20,356.77-28,094.41-11,405.87

Finding the Fourth Proportional to 20,356.77, 28,094.41 and 11,405.87

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Solution

The fourth proportional to 20,356.77, 28,094.41 and 11,405.87 is: 15,741.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.77 : 28,094.41 = 11,405.87 : x
  2. Step 2: Convert to fraction form
    20,356.77/28,094.41 = 11,405.87/x
  3. Step 3: Cross multiply
    20,356.77x = 28,094.41 × 11,405.87
  4. Step 4: Simplify right side
    20,356.77x = 320,441,188.19
  5. Step 5: Solve for x
    x = 320,441,188.19/20,356.77
  6. Step 6: Final answer
    x = 15,741.26

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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.