Home / 11,379.84-15,704.32-6,412.16

Finding the Fourth Proportional to 11,379.84, 15,704.32 and 6,412.16

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Solution

The fourth proportional to 11,379.84, 15,704.32 and 6,412.16 is: 8,848.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.84 : 15,704.32 = 6,412.16 : x
  2. Step 2: Convert to fraction form
    11,379.84/15,704.32 = 6,412.16/x
  3. Step 3: Cross multiply
    11,379.84x = 15,704.32 × 6,412.16
  4. Step 4: Simplify right side
    11,379.84x = 100,698,612.53
  5. Step 5: Solve for x
    x = 100,698,612.53/11,379.84
  6. Step 6: Final answer
    x = 8,848.86

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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.