Home / 12,821.71-19,230.64-4,055.48

Finding the Fourth Proportional to 12,821.71, 19,230.64 and 4,055.48

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Solution

The fourth proportional to 12,821.71, 19,230.64 and 4,055.48 is: 6,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.71 : 19,230.64 = 4,055.48 : x
  2. Step 2: Convert to fraction form
    12,821.71/19,230.64 = 4,055.48/x
  3. Step 3: Cross multiply
    12,821.71x = 19,230.64 × 4,055.48
  4. Step 4: Simplify right side
    12,821.71x = 77,989,561.31
  5. Step 5: Solve for x
    x = 77,989,561.31/12,821.71
  6. Step 6: Final answer
    x = 6,082.62

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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.