Home / 21,169.01-29,213.33-12,216.89

Finding the Fourth Proportional to 21,169.01, 29,213.33 and 12,216.89

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Solution

The fourth proportional to 21,169.01, 29,213.33 and 12,216.89 is: 16,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.01 : 29,213.33 = 12,216.89 : x
  2. Step 2: Convert to fraction form
    21,169.01/29,213.33 = 12,216.89/x
  3. Step 3: Cross multiply
    21,169.01x = 29,213.33 × 12,216.89
  4. Step 4: Simplify right side
    21,169.01x = 356,895,831.99
  5. Step 5: Solve for x
    x = 356,895,831.99/21,169.01
  6. Step 6: Final answer
    x = 16,859.36

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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.