Home / 12,411.38-18,618-4,620.26

Finding the Fourth Proportional to 12,411.38, 18,618 and 4,620.26

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Solution

The fourth proportional to 12,411.38, 18,618 and 4,620.26 is: 6,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.38 : 18,618 = 4,620.26 : x
  2. Step 2: Convert to fraction form
    12,411.38/18,618 = 4,620.26/x
  3. Step 3: Cross multiply
    12,411.38x = 18,618 × 4,620.26
  4. Step 4: Simplify right side
    12,411.38x = 86,020,000.68
  5. Step 5: Solve for x
    x = 86,020,000.68/12,411.38
  6. Step 6: Final answer
    x = 6,930.74

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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.