Home / 11,889.55-16,407.12-6,511.91

Finding the Fourth Proportional to 11,889.55, 16,407.12 and 6,511.91

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Solution

The fourth proportional to 11,889.55, 16,407.12 and 6,511.91 is: 8,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.55 : 16,407.12 = 6,511.91 : x
  2. Step 2: Convert to fraction form
    11,889.55/16,407.12 = 6,511.91/x
  3. Step 3: Cross multiply
    11,889.55x = 16,407.12 × 6,511.91
  4. Step 4: Simplify right side
    11,889.55x = 106,841,606.76
  5. Step 5: Solve for x
    x = 106,841,606.76/11,889.55
  6. Step 6: Final answer
    x = 8,986.18

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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.