Home / 15,297.64-21,110.82-8,928.68

Finding the Fourth Proportional to 15,297.64, 21,110.82 and 8,928.68

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Solution

The fourth proportional to 15,297.64, 21,110.82 and 8,928.68 is: 12,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.64 : 21,110.82 = 8,928.68 : x
  2. Step 2: Convert to fraction form
    15,297.64/21,110.82 = 8,928.68/x
  3. Step 3: Cross multiply
    15,297.64x = 21,110.82 × 8,928.68
  4. Step 4: Simplify right side
    15,297.64x = 188,491,756.32
  5. Step 5: Solve for x
    x = 188,491,756.32/15,297.64
  6. Step 6: Final answer
    x = 12,321.62

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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.