Home / 11,695.11-16,139.34-6,389.92

Finding the Fourth Proportional to 11,695.11, 16,139.34 and 6,389.92

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Solution

The fourth proportional to 11,695.11, 16,139.34 and 6,389.92 is: 8,818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.11 : 16,139.34 = 6,389.92 : x
  2. Step 2: Convert to fraction form
    11,695.11/16,139.34 = 6,389.92/x
  3. Step 3: Cross multiply
    11,695.11x = 16,139.34 × 6,389.92
  4. Step 4: Simplify right side
    11,695.11x = 103,129,091.45
  5. Step 5: Solve for x
    x = 103,129,091.45/11,695.11
  6. Step 6: Final answer
    x = 8,818.14

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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.