Home / 10,863.45-14,990.67-6,387.39

Finding the Fourth Proportional to 10,863.45, 14,990.67 and 6,387.39

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Solution

The fourth proportional to 10,863.45, 14,990.67 and 6,387.39 is: 8,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.45 : 14,990.67 = 6,387.39 : x
  2. Step 2: Convert to fraction form
    10,863.45/14,990.67 = 6,387.39/x
  3. Step 3: Cross multiply
    10,863.45x = 14,990.67 × 6,387.39
  4. Step 4: Simplify right side
    10,863.45x = 95,751,255.65
  5. Step 5: Solve for x
    x = 95,751,255.65/10,863.45
  6. Step 6: Final answer
    x = 8,814.07

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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.