Home / 21,166.68-29,208.58-12,214.56

Finding the Fourth Proportional to 21,166.68, 29,208.58 and 12,214.56

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Solution

The fourth proportional to 21,166.68, 29,208.58 and 12,214.56 is: 16,855.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.68 : 29,208.58 = 12,214.56 : x
  2. Step 2: Convert to fraction form
    21,166.68/29,208.58 = 12,214.56/x
  3. Step 3: Cross multiply
    21,166.68x = 29,208.58 × 12,214.56
  4. Step 4: Simplify right side
    21,166.68x = 356,769,952.92
  5. Step 5: Solve for x
    x = 356,769,952.92/21,166.68
  6. Step 6: Final answer
    x = 16,855.26

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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.