Home / 30,860.87-46,212.23-21,360.02

Finding the Fourth Proportional to 30,860.87, 46,212.23 and 21,360.02

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Solution

The fourth proportional to 30,860.87, 46,212.23 and 21,360.02 is: 31,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,860.87 : 46,212.23 = 21,360.02 : x
  2. Step 2: Convert to fraction form
    30,860.87/46,212.23 = 21,360.02/x
  3. Step 3: Cross multiply
    30,860.87x = 46,212.23 × 21,360.02
  4. Step 4: Simplify right side
    30,860.87x = 987,093,979.38
  5. Step 5: Solve for x
    x = 987,093,979.38/30,860.87
  6. Step 6: Final answer
    x = 31,985.30

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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.