Home / 12,082.20-16,686.95-8,316.92

Finding the Fourth Proportional to 12,082.20, 16,686.95 and 8,316.92

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Solution

The fourth proportional to 12,082.20, 16,686.95 and 8,316.92 is: 11,486.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.20 : 16,686.95 = 8,316.92 : x
  2. Step 2: Convert to fraction form
    12,082.20/16,686.95 = 8,316.92/x
  3. Step 3: Cross multiply
    12,082.20x = 16,686.95 × 8,316.92
  4. Step 4: Simplify right side
    12,082.20x = 138,783,903.17
  5. Step 5: Solve for x
    x = 138,783,903.17/12,082.20
  6. Step 6: Final answer
    x = 11,486.64

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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.