Home / 31,409.87-47,096.35-12,690.50

Finding the Fourth Proportional to 31,409.87, 47,096.35 and 12,690.50

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Solution

The fourth proportional to 31,409.87, 47,096.35 and 12,690.50 is: 19,028.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.87 : 47,096.35 = 12,690.50 : x
  2. Step 2: Convert to fraction form
    31,409.87/47,096.35 = 12,690.50/x
  3. Step 3: Cross multiply
    31,409.87x = 47,096.35 × 12,690.50
  4. Step 4: Simplify right side
    31,409.87x = 597,676,229.68
  5. Step 5: Solve for x
    x = 597,676,229.68/31,409.87
  6. Step 6: Final answer
    x = 19,028.29

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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.