Home / 12,672.47-19,005.84-4,775.81

Finding the Fourth Proportional to 12,672.47, 19,005.84 and 4,775.81

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Solution

The fourth proportional to 12,672.47, 19,005.84 and 4,775.81 is: 7,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.47 : 19,005.84 = 4,775.81 : x
  2. Step 2: Convert to fraction form
    12,672.47/19,005.84 = 4,775.81/x
  3. Step 3: Cross multiply
    12,672.47x = 19,005.84 × 4,775.81
  4. Step 4: Simplify right side
    12,672.47x = 90,768,185.70
  5. Step 5: Solve for x
    x = 90,768,185.70/12,672.47
  6. Step 6: Final answer
    x = 7,162.63

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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.