Home / 12,478.44-18,712.18-4,681.79

Finding the Fourth Proportional to 12,478.44, 18,712.18 and 4,681.79

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Solution

The fourth proportional to 12,478.44, 18,712.18 and 4,681.79 is: 7,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.44 : 18,712.18 = 4,681.79 : x
  2. Step 2: Convert to fraction form
    12,478.44/18,712.18 = 4,681.79/x
  3. Step 3: Cross multiply
    12,478.44x = 18,712.18 × 4,681.79
  4. Step 4: Simplify right side
    12,478.44x = 87,606,497.20
  5. Step 5: Solve for x
    x = 87,606,497.20/12,478.44
  6. Step 6: Final answer
    x = 7,020.63

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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.