Home / 19,583.40-29,331.90-7,890.60

Finding the Fourth Proportional to 19,583.40, 29,331.90 and 7,890.60

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Solution

The fourth proportional to 19,583.40, 29,331.90 and 7,890.60 is: 11,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,583.40 : 29,331.90 = 7,890.60 : x
  2. Step 2: Convert to fraction form
    19,583.40/29,331.90 = 7,890.60/x
  3. Step 3: Cross multiply
    19,583.40x = 29,331.90 × 7,890.60
  4. Step 4: Simplify right side
    19,583.40x = 231,446,290.14
  5. Step 5: Solve for x
    x = 231,446,290.14/19,583.40
  6. Step 6: Final answer
    x = 11,818.49

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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.