Home / 12,405.32-18,603.12-4,611.68

Finding the Fourth Proportional to 12,405.32, 18,603.12 and 4,611.68

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Solution

The fourth proportional to 12,405.32, 18,603.12 and 4,611.68 is: 6,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.32 : 18,603.12 = 4,611.68 : x
  2. Step 2: Convert to fraction form
    12,405.32/18,603.12 = 4,611.68/x
  3. Step 3: Cross multiply
    12,405.32x = 18,603.12 × 4,611.68
  4. Step 4: Simplify right side
    12,405.32x = 85,791,636.44
  5. Step 5: Solve for x
    x = 85,791,636.44/12,405.32
  6. Step 6: Final answer
    x = 6,915.71

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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.