Home / 12,137.76-18,195.78-4,740.48

Finding the Fourth Proportional to 12,137.76, 18,195.78 and 4,740.48

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Solution

The fourth proportional to 12,137.76, 18,195.78 and 4,740.48 is: 7,106.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.76 : 18,195.78 = 4,740.48 : x
  2. Step 2: Convert to fraction form
    12,137.76/18,195.78 = 4,740.48/x
  3. Step 3: Cross multiply
    12,137.76x = 18,195.78 × 4,740.48
  4. Step 4: Simplify right side
    12,137.76x = 86,256,731.17
  5. Step 5: Solve for x
    x = 86,256,731.17/12,137.76
  6. Step 6: Final answer
    x = 7,106.48

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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.