Home / 30,211.14-45,321.32-15,411.98

Finding the Fourth Proportional to 30,211.14, 45,321.32 and 15,411.98

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Solution

The fourth proportional to 30,211.14, 45,321.32 and 15,411.98 is: 23,120.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.14 : 45,321.32 = 15,411.98 : x
  2. Step 2: Convert to fraction form
    30,211.14/45,321.32 = 15,411.98/x
  3. Step 3: Cross multiply
    30,211.14x = 45,321.32 × 15,411.98
  4. Step 4: Simplify right side
    30,211.14x = 698,491,277.41
  5. Step 5: Solve for x
    x = 698,491,277.41/30,211.14
  6. Step 6: Final answer
    x = 23,120.32

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1.5x scale

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.