Home / 16,815.36-25,215.72-5,125.86

Finding the Fourth Proportional to 16,815.36, 25,215.72 and 5,125.86

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Solution

The fourth proportional to 16,815.36, 25,215.72 and 5,125.86 is: 7,686.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.36 : 25,215.72 = 5,125.86 : x
  2. Step 2: Convert to fraction form
    16,815.36/25,215.72 = 5,125.86/x
  3. Step 3: Cross multiply
    16,815.36x = 25,215.72 × 5,125.86
  4. Step 4: Simplify right side
    16,815.36x = 129,252,250.52
  5. Step 5: Solve for x
    x = 129,252,250.52/16,815.36
  6. Step 6: Final answer
    x = 7,686.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.