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Finding the Fourth Proportional to 25,911.00, 38,870.14 and 12,763.48

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Solution

The fourth proportional to 25,911.00, 38,870.14 and 12,763.48 is: 19,147.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,911.00 : 38,870.14 = 12,763.48 : x
  2. Step 2: Convert to fraction form
    25,911.00/38,870.14 = 12,763.48/x
  3. Step 3: Cross multiply
    25,911.00x = 38,870.14 × 12,763.48
  4. Step 4: Simplify right side
    25,911.00x = 496,118,222.58
  5. Step 5: Solve for x
    x = 496,118,222.58/25,911.00
  6. Step 6: Final answer
    x = 19,147.02

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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.