Home / 12,748.78-19,111.80-4,955.80

Finding the Fourth Proportional to 12,748.78, 19,111.80 and 4,955.80

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Solution

The fourth proportional to 12,748.78, 19,111.80 and 4,955.80 is: 7,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.78 : 19,111.80 = 4,955.80 : x
  2. Step 2: Convert to fraction form
    12,748.78/19,111.80 = 4,955.80/x
  3. Step 3: Cross multiply
    12,748.78x = 19,111.80 × 4,955.80
  4. Step 4: Simplify right side
    12,748.78x = 94,714,258.44
  5. Step 5: Solve for x
    x = 94,714,258.44/12,748.78
  6. Step 6: Final answer
    x = 7,429.28

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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.