Home / 12,827.40-19,243.13-5,431.91

Finding the Fourth Proportional to 12,827.40, 19,243.13 and 5,431.91

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Solution

The fourth proportional to 12,827.40, 19,243.13 and 5,431.91 is: 8,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,827.40 : 19,243.13 = 5,431.91 : x
  2. Step 2: Convert to fraction form
    12,827.40/19,243.13 = 5,431.91/x
  3. Step 3: Cross multiply
    12,827.40x = 19,243.13 × 5,431.91
  4. Step 4: Simplify right side
    12,827.40x = 104,526,826.90
  5. Step 5: Solve for x
    x = 104,526,826.90/12,827.40
  6. Step 6: Final answer
    x = 8,148.72

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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.