Home / 31,182.75-46,774.14-12,471.21

Finding the Fourth Proportional to 31,182.75, 46,774.14 and 12,471.21

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Solution

The fourth proportional to 31,182.75, 46,774.14 and 12,471.21 is: 18,706.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,182.75 : 46,774.14 = 12,471.21 : x
  2. Step 2: Convert to fraction form
    31,182.75/46,774.14 = 12,471.21/x
  3. Step 3: Cross multiply
    31,182.75x = 46,774.14 × 12,471.21
  4. Step 4: Simplify right side
    31,182.75x = 583,330,122.51
  5. Step 5: Solve for x
    x = 583,330,122.51/31,182.75
  6. Step 6: Final answer
    x = 18,706.82

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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.