Home / 15,297.85-21,111.01-8,928.82

Finding the Fourth Proportional to 15,297.85, 21,111.01 and 8,928.82

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Solution

The fourth proportional to 15,297.85, 21,111.01 and 8,928.82 is: 12,321.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.85 : 21,111.01 = 8,928.82 : x
  2. Step 2: Convert to fraction form
    15,297.85/21,111.01 = 8,928.82/x
  3. Step 3: Cross multiply
    15,297.85x = 21,111.01 × 8,928.82
  4. Step 4: Simplify right side
    15,297.85x = 188,496,408.31
  5. Step 5: Solve for x
    x = 188,496,408.31/15,297.85
  6. Step 6: Final answer
    x = 12,321.76

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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.