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Finding the Fourth Proportional to 10,260, 15,390.72 and 4,104

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Solution

The fourth proportional to 10,260, 15,390.72 and 4,104 is: 6,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,260 : 15,390.72 = 4,104 : x
  2. Step 2: Convert to fraction form
    10,260/15,390.72 = 4,104/x
  3. Step 3: Cross multiply
    10,260x = 15,390.72 × 4,104
  4. Step 4: Simplify right side
    10,260x = 63,163,514.88
  5. Step 5: Solve for x
    x = 63,163,514.88/10,260
  6. Step 6: Final answer
    x = 6,156.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.