Home / 12,884.76-19,339.80-6,315.72

Finding the Fourth Proportional to 12,884.76, 19,339.80 and 6,315.72

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Solution

The fourth proportional to 12,884.76, 19,339.80 and 6,315.72 is: 9,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884.76 : 19,339.80 = 6,315.72 : x
  2. Step 2: Convert to fraction form
    12,884.76/19,339.80 = 6,315.72/x
  3. Step 3: Cross multiply
    12,884.76x = 19,339.80 × 6,315.72
  4. Step 4: Simplify right side
    12,884.76x = 122,144,761.66
  5. Step 5: Solve for x
    x = 122,144,761.66/12,884.76
  6. Step 6: Final answer
    x = 9,479.79

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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.