Home / 31,318.96-46,860.72-21,977.20

Finding the Fourth Proportional to 31,318.96, 46,860.72 and 21,977.20

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Solution

The fourth proportional to 31,318.96, 46,860.72 and 21,977.20 is: 32,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.96 : 46,860.72 = 21,977.20 : x
  2. Step 2: Convert to fraction form
    31,318.96/46,860.72 = 21,977.20/x
  3. Step 3: Cross multiply
    31,318.96x = 46,860.72 × 21,977.20
  4. Step 4: Simplify right side
    31,318.96x = 1,029,867,415.58
  5. Step 5: Solve for x
    x = 1,029,867,415.58/31,318.96
  6. Step 6: Final answer
    x = 32,883.19

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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.