Home / 11,379.42-15,705.63-6,905.39

Finding the Fourth Proportional to 11,379.42, 15,705.63 and 6,905.39

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Solution

The fourth proportional to 11,379.42, 15,705.63 and 6,905.39 is: 9,530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.42 : 15,705.63 = 6,905.39 : x
  2. Step 2: Convert to fraction form
    11,379.42/15,705.63 = 6,905.39/x
  3. Step 3: Cross multiply
    11,379.42x = 15,705.63 × 6,905.39
  4. Step 4: Simplify right side
    11,379.42x = 108,453,421.82
  5. Step 5: Solve for x
    x = 108,453,421.82/11,379.42
  6. Step 6: Final answer
    x = 9,530.66

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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.