Home / 11,718.55-16,172.03-6,681.96

Finding the Fourth Proportional to 11,718.55, 16,172.03 and 6,681.96

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Solution

The fourth proportional to 11,718.55, 16,172.03 and 6,681.96 is: 9,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.55 : 16,172.03 = 6,681.96 : x
  2. Step 2: Convert to fraction form
    11,718.55/16,172.03 = 6,681.96/x
  3. Step 3: Cross multiply
    11,718.55x = 16,172.03 × 6,681.96
  4. Step 4: Simplify right side
    11,718.55x = 108,060,857.58
  5. Step 5: Solve for x
    x = 108,060,857.58/11,718.55
  6. Step 6: Final answer
    x = 9,221.35

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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.