Home / 30,918.11-46,377.36-8,731.40

Finding the Fourth Proportional to 30,918.11, 46,377.36 and 8,731.40

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Solution

The fourth proportional to 30,918.11, 46,377.36 and 8,731.40 is: 13,097.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.11 : 46,377.36 = 8,731.40 : x
  2. Step 2: Convert to fraction form
    30,918.11/46,377.36 = 8,731.40/x
  3. Step 3: Cross multiply
    30,918.11x = 46,377.36 × 8,731.40
  4. Step 4: Simplify right side
    30,918.11x = 404,939,049.22
  5. Step 5: Solve for x
    x = 404,939,049.22/30,918.11
  6. Step 6: Final answer
    x = 13,097.15

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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.