Home / 15,003.63-20,704.31-8,289.32

Finding the Fourth Proportional to 15,003.63, 20,704.31 and 8,289.32

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Solution

The fourth proportional to 15,003.63, 20,704.31 and 8,289.32 is: 11,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.63 : 20,704.31 = 8,289.32 : x
  2. Step 2: Convert to fraction form
    15,003.63/20,704.31 = 8,289.32/x
  3. Step 3: Cross multiply
    15,003.63x = 20,704.31 × 8,289.32
  4. Step 4: Simplify right side
    15,003.63x = 171,624,506.00
  5. Step 5: Solve for x
    x = 171,624,506.00/15,003.63
  6. Step 6: Final answer
    x = 11,438.87

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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.