Home / 9,690.69-13,377.21-8,206.29

Finding the Fourth Proportional to 9,690.69, 13,377.21 and 8,206.29

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Solution

The fourth proportional to 9,690.69, 13,377.21 and 8,206.29 is: 11,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,690.69 : 13,377.21 = 8,206.29 : x
  2. Step 2: Convert to fraction form
    9,690.69/13,377.21 = 8,206.29/x
  3. Step 3: Cross multiply
    9,690.69x = 13,377.21 × 8,206.29
  4. Step 4: Simplify right side
    9,690.69x = 109,777,156.73
  5. Step 5: Solve for x
    x = 109,777,156.73/9,690.69
  6. Step 6: Final answer
    x = 11,328.11

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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.