Home / 12,785.18-19,176.51-4,019.86

Finding the Fourth Proportional to 12,785.18, 19,176.51 and 4,019.86

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Solution

The fourth proportional to 12,785.18, 19,176.51 and 4,019.86 is: 6,029.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.18 : 19,176.51 = 4,019.86 : x
  2. Step 2: Convert to fraction form
    12,785.18/19,176.51 = 4,019.86/x
  3. Step 3: Cross multiply
    12,785.18x = 19,176.51 × 4,019.86
  4. Step 4: Simplify right side
    12,785.18x = 77,086,885.49
  5. Step 5: Solve for x
    x = 77,086,885.49/12,785.18
  6. Step 6: Final answer
    x = 6,029.39

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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.