Home / 21,442.82-29,583.90-12,488.40

Finding the Fourth Proportional to 21,442.82, 29,583.90 and 12,488.40

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Solution

The fourth proportional to 21,442.82, 29,583.90 and 12,488.40 is: 17,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.82 : 29,583.90 = 12,488.40 : x
  2. Step 2: Convert to fraction form
    21,442.82/29,583.90 = 12,488.40/x
  3. Step 3: Cross multiply
    21,442.82x = 29,583.90 × 12,488.40
  4. Step 4: Simplify right side
    21,442.82x = 369,455,576.76
  5. Step 5: Solve for x
    x = 369,455,576.76/21,442.82
  6. Step 6: Final answer
    x = 17,229.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.