Home / 15,003.88-20,704.65-8,289.57

Finding the Fourth Proportional to 15,003.88, 20,704.65 and 8,289.57

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Solution

The fourth proportional to 15,003.88, 20,704.65 and 8,289.57 is: 11,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.88 : 20,704.65 = 8,289.57 : x
  2. Step 2: Convert to fraction form
    15,003.88/20,704.65 = 8,289.57/x
  3. Step 3: Cross multiply
    15,003.88x = 20,704.65 × 8,289.57
  4. Step 4: Simplify right side
    15,003.88x = 171,632,541.98
  5. Step 5: Solve for x
    x = 171,632,541.98/15,003.88
  6. Step 6: Final answer
    x = 11,439.21

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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.