Home / 11,855.14-16,355.01-8,320.66

Finding the Fourth Proportional to 11,855.14, 16,355.01 and 8,320.66

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Solution

The fourth proportional to 11,855.14, 16,355.01 and 8,320.66 is: 11,478.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.14 : 16,355.01 = 8,320.66 : x
  2. Step 2: Convert to fraction form
    11,855.14/16,355.01 = 8,320.66/x
  3. Step 3: Cross multiply
    11,855.14x = 16,355.01 × 8,320.66
  4. Step 4: Simplify right side
    11,855.14x = 136,084,477.51
  5. Step 5: Solve for x
    x = 136,084,477.51/11,855.14
  6. Step 6: Final answer
    x = 11,478.94

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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.