Home / 15,323.75-21,147.06-8,518.41

Finding the Fourth Proportional to 15,323.75, 21,147.06 and 8,518.41

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Solution

The fourth proportional to 15,323.75, 21,147.06 and 8,518.41 is: 11,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.75 : 21,147.06 = 8,518.41 : x
  2. Step 2: Convert to fraction form
    15,323.75/21,147.06 = 8,518.41/x
  3. Step 3: Cross multiply
    15,323.75x = 21,147.06 × 8,518.41
  4. Step 4: Simplify right side
    15,323.75x = 180,139,327.37
  5. Step 5: Solve for x
    x = 180,139,327.37/15,323.75
  6. Step 6: Final answer
    x = 11,755.56

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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.