Home / 30,869.47-46,307.31-8,380.53

Finding the Fourth Proportional to 30,869.47, 46,307.31 and 8,380.53

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Solution

The fourth proportional to 30,869.47, 46,307.31 and 8,380.53 is: 12,571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.47 : 46,307.31 = 8,380.53 : x
  2. Step 2: Convert to fraction form
    30,869.47/46,307.31 = 8,380.53/x
  3. Step 3: Cross multiply
    30,869.47x = 46,307.31 × 8,380.53
  4. Step 4: Simplify right side
    30,869.47x = 388,079,758.77
  5. Step 5: Solve for x
    x = 388,079,758.77/30,869.47
  6. Step 6: Final answer
    x = 12,571.64

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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.