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Finding the Fourth Proportional to 11,695.34, 16,139.10 and 6,390.34

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Solution

The fourth proportional to 11,695.34, 16,139.10 and 6,390.34 is: 8,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.34 : 16,139.10 = 6,390.34 : x
  2. Step 2: Convert to fraction form
    11,695.34/16,139.10 = 6,390.34/x
  3. Step 3: Cross multiply
    11,695.34x = 16,139.10 × 6,390.34
  4. Step 4: Simplify right side
    11,695.34x = 103,134,304.34
  5. Step 5: Solve for x
    x = 103,134,304.34/11,695.34
  6. Step 6: Final answer
    x = 8,818.41

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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.