Home / 13,315.58-18,369.69-8,007.38

Finding the Fourth Proportional to 13,315.58, 18,369.69 and 8,007.38

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Solution

The fourth proportional to 13,315.58, 18,369.69 and 8,007.38 is: 11,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.58 : 18,369.69 = 8,007.38 : x
  2. Step 2: Convert to fraction form
    13,315.58/18,369.69 = 8,007.38/x
  3. Step 3: Cross multiply
    13,315.58x = 18,369.69 × 8,007.38
  4. Step 4: Simplify right side
    13,315.58x = 147,093,088.31
  5. Step 5: Solve for x
    x = 147,093,088.31/13,315.58
  6. Step 6: Final answer
    x = 11,046.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.