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Finding the Fourth Proportional to 16,101.80, 21,806.55 and 16,101.80

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Solution

The fourth proportional to 16,101.80, 21,806.55 and 16,101.80 is: 21,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,101.80 : 21,806.55 = 16,101.80 : x
  2. Step 2: Convert to fraction form
    16,101.80/21,806.55 = 16,101.80/x
  3. Step 3: Cross multiply
    16,101.80x = 21,806.55 × 16,101.80
  4. Step 4: Simplify right side
    16,101.80x = 351,124,706.79
  5. Step 5: Solve for x
    x = 351,124,706.79/16,101.80
  6. Step 6: Final answer
    x = 21,806.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.