Home / 11,695.23-16,139.40-6,390.12

Finding the Fourth Proportional to 11,695.23, 16,139.40 and 6,390.12

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Solution

The fourth proportional to 11,695.23, 16,139.40 and 6,390.12 is: 8,818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.23 : 16,139.40 = 6,390.12 : x
  2. Step 2: Convert to fraction form
    11,695.23/16,139.40 = 6,390.12/x
  3. Step 3: Cross multiply
    11,695.23x = 16,139.40 × 6,390.12
  4. Step 4: Simplify right side
    11,695.23x = 103,132,702.73
  5. Step 5: Solve for x
    x = 103,132,702.73/11,695.23
  6. Step 6: Final answer
    x = 8,818.36

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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.