Home / 20,356.29-30,539.60-8,508.01

Finding the Fourth Proportional to 20,356.29, 30,539.60 and 8,508.01

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Solution

The fourth proportional to 20,356.29, 30,539.60 and 8,508.01 is: 12,764.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.29 : 30,539.60 = 8,508.01 : x
  2. Step 2: Convert to fraction form
    20,356.29/30,539.60 = 8,508.01/x
  3. Step 3: Cross multiply
    20,356.29x = 30,539.60 × 8,508.01
  4. Step 4: Simplify right side
    20,356.29x = 259,831,222.20
  5. Step 5: Solve for x
    x = 259,831,222.20/20,356.29
  6. Step 6: Final answer
    x = 12,764.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.