Home / 31,308.23-46,970-9,121.84

Finding the Fourth Proportional to 31,308.23, 46,970 and 9,121.84

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Solution

The fourth proportional to 31,308.23, 46,970 and 9,121.84 is: 13,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,308.23 : 46,970 = 9,121.84 : x
  2. Step 2: Convert to fraction form
    31,308.23/46,970 = 9,121.84/x
  3. Step 3: Cross multiply
    31,308.23x = 46,970 × 9,121.84
  4. Step 4: Simplify right side
    31,308.23x = 428,452,824.80
  5. Step 5: Solve for x
    x = 428,452,824.80/31,308.23
  6. Step 6: Final answer
    x = 13,684.99

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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.