Home / 11,705.99-16,154.31-6,400.90

Finding the Fourth Proportional to 11,705.99, 16,154.31 and 6,400.90

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Solution

The fourth proportional to 11,705.99, 16,154.31 and 6,400.90 is: 8,833.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.99 : 16,154.31 = 6,400.90 : x
  2. Step 2: Convert to fraction form
    11,705.99/16,154.31 = 6,400.90/x
  3. Step 3: Cross multiply
    11,705.99x = 16,154.31 × 6,400.90
  4. Step 4: Simplify right side
    11,705.99x = 103,402,122.88
  5. Step 5: Solve for x
    x = 103,402,122.88/11,705.99
  6. Step 6: Final answer
    x = 8,833.27

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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.