Home / 15,442.44-21,309.64-8,636.41

Finding the Fourth Proportional to 15,442.44, 21,309.64 and 8,636.41

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Solution

The fourth proportional to 15,442.44, 21,309.64 and 8,636.41 is: 11,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.44 : 21,309.64 = 8,636.41 : x
  2. Step 2: Convert to fraction form
    15,442.44/21,309.64 = 8,636.41/x
  3. Step 3: Cross multiply
    15,442.44x = 21,309.64 × 8,636.41
  4. Step 4: Simplify right side
    15,442.44x = 184,038,787.99
  5. Step 5: Solve for x
    x = 184,038,787.99/15,442.44
  6. Step 6: Final answer
    x = 11,917.73

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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.