Home / 19,488.12-29,231.94-8,402.60

Finding the Fourth Proportional to 19,488.12, 29,231.94 and 8,402.60

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Solution

The fourth proportional to 19,488.12, 29,231.94 and 8,402.60 is: 12,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.12 : 29,231.94 = 8,402.60 : x
  2. Step 2: Convert to fraction form
    19,488.12/29,231.94 = 8,402.60/x
  3. Step 3: Cross multiply
    19,488.12x = 29,231.94 × 8,402.60
  4. Step 4: Simplify right side
    19,488.12x = 245,624,299.04
  5. Step 5: Solve for x
    x = 245,624,299.04/19,488.12
  6. Step 6: Final answer
    x = 12,603.80

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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.