Home / 15,002.51-20,704.67-8,288.72

Finding the Fourth Proportional to 15,002.51, 20,704.67 and 8,288.72

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Solution

The fourth proportional to 15,002.51, 20,704.67 and 8,288.72 is: 11,439.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.51 : 20,704.67 = 8,288.72 : x
  2. Step 2: Convert to fraction form
    15,002.51/20,704.67 = 8,288.72/x
  3. Step 3: Cross multiply
    15,002.51x = 20,704.67 × 8,288.72
  4. Step 4: Simplify right side
    15,002.51x = 171,615,067.36
  5. Step 5: Solve for x
    x = 171,615,067.36/15,002.51
  6. Step 6: Final answer
    x = 11,439.09

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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.