Home / 11,431.65-15,776.30-6,395.57

Finding the Fourth Proportional to 11,431.65, 15,776.30 and 6,395.57

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Solution

The fourth proportional to 11,431.65, 15,776.30 and 6,395.57 is: 8,826.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.65 : 15,776.30 = 6,395.57 : x
  2. Step 2: Convert to fraction form
    11,431.65/15,776.30 = 6,395.57/x
  3. Step 3: Cross multiply
    11,431.65x = 15,776.30 × 6,395.57
  4. Step 4: Simplify right side
    11,431.65x = 100,898,438.45
  5. Step 5: Solve for x
    x = 100,898,438.45/11,431.65
  6. Step 6: Final answer
    x = 8,826.23

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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.