Home / 19,488.40-29,189.40-7,795.60

Finding the Fourth Proportional to 19,488.40, 29,189.40 and 7,795.60

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Solution

The fourth proportional to 19,488.40, 29,189.40 and 7,795.60 is: 11,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.40 : 29,189.40 = 7,795.60 : x
  2. Step 2: Convert to fraction form
    19,488.40/29,189.40 = 7,795.60/x
  3. Step 3: Cross multiply
    19,488.40x = 29,189.40 × 7,795.60
  4. Step 4: Simplify right side
    19,488.40x = 227,548,886.64
  5. Step 5: Solve for x
    x = 227,548,886.64/19,488.40
  6. Step 6: Final answer
    x = 11,676.12

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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.