Home / 12,343.64-18,516.36-3,578.60

Finding the Fourth Proportional to 12,343.64, 18,516.36 and 3,578.60

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Solution

The fourth proportional to 12,343.64, 18,516.36 and 3,578.60 is: 5,368.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.64 : 18,516.36 = 3,578.60 : x
  2. Step 2: Convert to fraction form
    12,343.64/18,516.36 = 3,578.60/x
  3. Step 3: Cross multiply
    12,343.64x = 18,516.36 × 3,578.60
  4. Step 4: Simplify right side
    12,343.64x = 66,262,645.90
  5. Step 5: Solve for x
    x = 66,262,645.90/12,343.64
  6. Step 6: Final answer
    x = 5,368.16

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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.