Home / 12,923.74-19,385.20-5,431.27

Finding the Fourth Proportional to 12,923.74, 19,385.20 and 5,431.27

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Solution

The fourth proportional to 12,923.74, 19,385.20 and 5,431.27 is: 8,146.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.74 : 19,385.20 = 5,431.27 : x
  2. Step 2: Convert to fraction form
    12,923.74/19,385.20 = 5,431.27/x
  3. Step 3: Cross multiply
    12,923.74x = 19,385.20 × 5,431.27
  4. Step 4: Simplify right side
    12,923.74x = 105,286,255.20
  5. Step 5: Solve for x
    x = 105,286,255.20/12,923.74
  6. Step 6: Final answer
    x = 8,146.73

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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.