Home / 20,609.99-28,442.43-11,657.32

Finding the Fourth Proportional to 20,609.99, 28,442.43 and 11,657.32

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Solution

The fourth proportional to 20,609.99, 28,442.43 and 11,657.32 is: 16,087.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.99 : 28,442.43 = 11,657.32 : x
  2. Step 2: Convert to fraction form
    20,609.99/28,442.43 = 11,657.32/x
  3. Step 3: Cross multiply
    20,609.99x = 28,442.43 × 11,657.32
  4. Step 4: Simplify right side
    20,609.99x = 331,562,436.98
  5. Step 5: Solve for x
    x = 331,562,436.98/20,609.99
  6. Step 6: Final answer
    x = 16,087.46

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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.