Home / 11,921-16,451.03-6,616.58

Finding the Fourth Proportional to 11,921, 16,451.03 and 6,616.58

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Solution

The fourth proportional to 11,921, 16,451.03 and 6,616.58 is: 9,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921 : 16,451.03 = 6,616.58 : x
  2. Step 2: Convert to fraction form
    11,921/16,451.03 = 6,616.58/x
  3. Step 3: Cross multiply
    11,921x = 16,451.03 × 6,616.58
  4. Step 4: Simplify right side
    11,921x = 108,849,522.99
  5. Step 5: Solve for x
    x = 108,849,522.99/11,921
  6. Step 6: Final answer
    x = 9,130.91

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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.