Home / 10,986.21-16,479.27-2,666.21

Finding the Fourth Proportional to 10,986.21, 16,479.27 and 2,666.21

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Solution

The fourth proportional to 10,986.21, 16,479.27 and 2,666.21 is: 3,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.21 : 16,479.27 = 2,666.21 : x
  2. Step 2: Convert to fraction form
    10,986.21/16,479.27 = 2,666.21/x
  3. Step 3: Cross multiply
    10,986.21x = 16,479.27 × 2,666.21
  4. Step 4: Simplify right side
    10,986.21x = 43,937,112.07
  5. Step 5: Solve for x
    x = 43,937,112.07/10,986.21
  6. Step 6: Final answer
    x = 3,999.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.