Home / 11,695.57-16,139.70-6,390.27

Finding the Fourth Proportional to 11,695.57, 16,139.70 and 6,390.27

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Solution

The fourth proportional to 11,695.57, 16,139.70 and 6,390.27 is: 8,818.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.57 : 16,139.70 = 6,390.27 : x
  2. Step 2: Convert to fraction form
    11,695.57/16,139.70 = 6,390.27/x
  3. Step 3: Cross multiply
    11,695.57x = 16,139.70 × 6,390.27
  4. Step 4: Simplify right side
    11,695.57x = 103,137,101.24
  5. Step 5: Solve for x
    x = 103,137,101.24/11,695.57
  6. Step 6: Final answer
    x = 8,818.47

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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.