Home / 16,220.70-22,379.34-12,806.88

Finding the Fourth Proportional to 16,220.70, 22,379.34 and 12,806.88

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Solution

The fourth proportional to 16,220.70, 22,379.34 and 12,806.88 is: 17,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,220.70 : 22,379.34 = 12,806.88 : x
  2. Step 2: Convert to fraction form
    16,220.70/22,379.34 = 12,806.88/x
  3. Step 3: Cross multiply
    16,220.70x = 22,379.34 × 12,806.88
  4. Step 4: Simplify right side
    16,220.70x = 286,609,521.86
  5. Step 5: Solve for x
    x = 286,609,521.86/16,220.70
  6. Step 6: Final answer
    x = 17,669.37

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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.