Home / 21,169.32-29,213.63-12,216.83

Finding the Fourth Proportional to 21,169.32, 29,213.63 and 12,216.83

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Solution

The fourth proportional to 21,169.32, 29,213.63 and 12,216.83 is: 16,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.32 : 29,213.63 = 12,216.83 : x
  2. Step 2: Convert to fraction form
    21,169.32/29,213.63 = 12,216.83/x
  3. Step 3: Cross multiply
    21,169.32x = 29,213.63 × 12,216.83
  4. Step 4: Simplify right side
    21,169.32x = 356,897,835.87
  5. Step 5: Solve for x
    x = 356,897,835.87/21,169.32
  6. Step 6: Final answer
    x = 16,859.20

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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.