Home / 12,940.28-19,405.64-4,618.07

Finding the Fourth Proportional to 12,940.28, 19,405.64 and 4,618.07

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Solution

The fourth proportional to 12,940.28, 19,405.64 and 4,618.07 is: 6,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.28 : 19,405.64 = 4,618.07 : x
  2. Step 2: Convert to fraction form
    12,940.28/19,405.64 = 4,618.07/x
  3. Step 3: Cross multiply
    12,940.28x = 19,405.64 × 4,618.07
  4. Step 4: Simplify right side
    12,940.28x = 89,616,483.80
  5. Step 5: Solve for x
    x = 89,616,483.80/12,940.28
  6. Step 6: Final answer
    x = 6,925.39

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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.