Home / 11,381.34-15,706.31-6,345.87

Finding the Fourth Proportional to 11,381.34, 15,706.31 and 6,345.87

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Solution

The fourth proportional to 11,381.34, 15,706.31 and 6,345.87 is: 8,757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.34 : 15,706.31 = 6,345.87 : x
  2. Step 2: Convert to fraction form
    11,381.34/15,706.31 = 6,345.87/x
  3. Step 3: Cross multiply
    11,381.34x = 15,706.31 × 6,345.87
  4. Step 4: Simplify right side
    11,381.34x = 99,670,201.44
  5. Step 5: Solve for x
    x = 99,670,201.44/11,381.34
  6. Step 6: Final answer
    x = 8,757.33

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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.