Home / 12,913.78-19,366.56-4,146.64

Finding the Fourth Proportional to 12,913.78, 19,366.56 and 4,146.64

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Solution

The fourth proportional to 12,913.78, 19,366.56 and 4,146.64 is: 6,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.78 : 19,366.56 = 4,146.64 : x
  2. Step 2: Convert to fraction form
    12,913.78/19,366.56 = 4,146.64/x
  3. Step 3: Cross multiply
    12,913.78x = 19,366.56 × 4,146.64
  4. Step 4: Simplify right side
    12,913.78x = 80,306,152.36
  5. Step 5: Solve for x
    x = 80,306,152.36/12,913.78
  6. Step 6: Final answer
    x = 6,218.64

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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.