Home / 15,004.96-20,708.84-8,631.39

Finding the Fourth Proportional to 15,004.96, 20,708.84 and 8,631.39

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Solution

The fourth proportional to 15,004.96, 20,708.84 and 8,631.39 is: 11,912.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.96 : 20,708.84 = 8,631.39 : x
  2. Step 2: Convert to fraction form
    15,004.96/20,708.84 = 8,631.39/x
  3. Step 3: Cross multiply
    15,004.96x = 20,708.84 × 8,631.39
  4. Step 4: Simplify right side
    15,004.96x = 178,746,040.24
  5. Step 5: Solve for x
    x = 178,746,040.24/15,004.96
  6. Step 6: Final answer
    x = 11,912.47

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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.