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Finding the Fourth Proportional to 25,950.69, 38,925.09 and 8,420.04

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Solution

The fourth proportional to 25,950.69, 38,925.09 and 8,420.04 is: 12,629.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,950.69 : 38,925.09 = 8,420.04 : x
  2. Step 2: Convert to fraction form
    25,950.69/38,925.09 = 8,420.04/x
  3. Step 3: Cross multiply
    25,950.69x = 38,925.09 × 8,420.04
  4. Step 4: Simplify right side
    25,950.69x = 327,750,814.80
  5. Step 5: Solve for x
    x = 327,750,814.80/25,950.69
  6. Step 6: Final answer
    x = 12,629.75

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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.