Home / 12,821.29-19,233.47-3,935.45

Finding the Fourth Proportional to 12,821.29, 19,233.47 and 3,935.45

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Solution

The fourth proportional to 12,821.29, 19,233.47 and 3,935.45 is: 5,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.29 : 19,233.47 = 3,935.45 : x
  2. Step 2: Convert to fraction form
    12,821.29/19,233.47 = 3,935.45/x
  3. Step 3: Cross multiply
    12,821.29x = 19,233.47 × 3,935.45
  4. Step 4: Simplify right side
    12,821.29x = 75,692,417.02
  5. Step 5: Solve for x
    x = 75,692,417.02/12,821.29
  6. Step 6: Final answer
    x = 5,903.65

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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.