Home / 12,806.20-17,666.28-8,558.31

Finding the Fourth Proportional to 12,806.20, 17,666.28 and 8,558.31

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Solution

The fourth proportional to 12,806.20, 17,666.28 and 8,558.31 is: 11,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.20 : 17,666.28 = 8,558.31 : x
  2. Step 2: Convert to fraction form
    12,806.20/17,666.28 = 8,558.31/x
  3. Step 3: Cross multiply
    12,806.20x = 17,666.28 × 8,558.31
  4. Step 4: Simplify right side
    12,806.20x = 151,193,369.66
  5. Step 5: Solve for x
    x = 151,193,369.66/12,806.20
  6. Step 6: Final answer
    x = 11,806.26

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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.