Home / 11,425.42-15,766.96-6,389.58

Finding the Fourth Proportional to 11,425.42, 15,766.96 and 6,389.58

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Solution

The fourth proportional to 11,425.42, 15,766.96 and 6,389.58 is: 8,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.42 : 15,766.96 = 6,389.58 : x
  2. Step 2: Convert to fraction form
    11,425.42/15,766.96 = 6,389.58/x
  3. Step 3: Cross multiply
    11,425.42x = 15,766.96 × 6,389.58
  4. Step 4: Simplify right side
    11,425.42x = 100,744,252.28
  5. Step 5: Solve for x
    x = 100,744,252.28/11,425.42
  6. Step 6: Final answer
    x = 8,817.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.