Home / 15,183.78-20,955.45-8,896.16

Finding the Fourth Proportional to 15,183.78, 20,955.45 and 8,896.16

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Solution

The fourth proportional to 15,183.78, 20,955.45 and 8,896.16 is: 12,277.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.78 : 20,955.45 = 8,896.16 : x
  2. Step 2: Convert to fraction form
    15,183.78/20,955.45 = 8,896.16/x
  3. Step 3: Cross multiply
    15,183.78x = 20,955.45 × 8,896.16
  4. Step 4: Simplify right side
    15,183.78x = 186,422,886.81
  5. Step 5: Solve for x
    x = 186,422,886.81/15,183.78
  6. Step 6: Final answer
    x = 12,277.77

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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.