Home / 12,495.24-18,736.68-4,172.40

Finding the Fourth Proportional to 12,495.24, 18,736.68 and 4,172.40

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Solution

The fourth proportional to 12,495.24, 18,736.68 and 4,172.40 is: 6,256.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.24 : 18,736.68 = 4,172.40 : x
  2. Step 2: Convert to fraction form
    12,495.24/18,736.68 = 4,172.40/x
  3. Step 3: Cross multiply
    12,495.24x = 18,736.68 × 4,172.40
  4. Step 4: Simplify right side
    12,495.24x = 78,176,923.63
  5. Step 5: Solve for x
    x = 78,176,923.63/12,495.24
  6. Step 6: Final answer
    x = 6,256.54

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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.