Home / 30,862.64-46,286.68-8,678.12

Finding the Fourth Proportional to 30,862.64, 46,286.68 and 8,678.12

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Solution

The fourth proportional to 30,862.64, 46,286.68 and 8,678.12 is: 13,015.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.64 : 46,286.68 = 8,678.12 : x
  2. Step 2: Convert to fraction form
    30,862.64/46,286.68 = 8,678.12/x
  3. Step 3: Cross multiply
    30,862.64x = 46,286.68 × 8,678.12
  4. Step 4: Simplify right side
    30,862.64x = 401,681,363.44
  5. Step 5: Solve for x
    x = 401,681,363.44/30,862.64
  6. Step 6: Final answer
    x = 13,015.13

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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.