Home / 12,492.60-18,739.23-4,172.31

Finding the Fourth Proportional to 12,492.60, 18,739.23 and 4,172.31

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Solution

The fourth proportional to 12,492.60, 18,739.23 and 4,172.31 is: 6,258.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.60 : 18,739.23 = 4,172.31 : x
  2. Step 2: Convert to fraction form
    12,492.60/18,739.23 = 4,172.31/x
  3. Step 3: Cross multiply
    12,492.60x = 18,739.23 × 4,172.31
  4. Step 4: Simplify right side
    12,492.60x = 78,185,876.72
  5. Step 5: Solve for x
    x = 78,185,876.72/12,492.60
  6. Step 6: Final answer
    x = 6,258.58

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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.