Home / 31,311.45-46,856.31-19,470.80

Finding the Fourth Proportional to 31,311.45, 46,856.31 and 19,470.80

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Solution

The fourth proportional to 31,311.45, 46,856.31 and 19,470.80 is: 29,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.45 : 46,856.31 = 19,470.80 : x
  2. Step 2: Convert to fraction form
    31,311.45/46,856.31 = 19,470.80/x
  3. Step 3: Cross multiply
    31,311.45x = 46,856.31 × 19,470.80
  4. Step 4: Simplify right side
    31,311.45x = 912,329,840.75
  5. Step 5: Solve for x
    x = 912,329,840.75/31,311.45
  6. Step 6: Final answer
    x = 29,137.26

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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.