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Finding the Fourth Proportional to 25,419.92, 38,128.95 and 6,699.65

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Solution

The fourth proportional to 25,419.92, 38,128.95 and 6,699.65 is: 10,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.92 : 38,128.95 = 6,699.65 : x
  2. Step 2: Convert to fraction form
    25,419.92/38,128.95 = 6,699.65/x
  3. Step 3: Cross multiply
    25,419.92x = 38,128.95 × 6,699.65
  4. Step 4: Simplify right side
    25,419.92x = 255,450,429.22
  5. Step 5: Solve for x
    x = 255,450,429.22/25,419.92
  6. Step 6: Final answer
    x = 10,049.22

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1.5x scale

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.