Home / 21,169.80-29,265.30-16,158.60

Finding the Fourth Proportional to 21,169.80, 29,265.30 and 16,158.60

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Solution

The fourth proportional to 21,169.80, 29,265.30 and 16,158.60 is: 22,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.80 : 29,265.30 = 16,158.60 : x
  2. Step 2: Convert to fraction form
    21,169.80/29,265.30 = 16,158.60/x
  3. Step 3: Cross multiply
    21,169.80x = 29,265.30 × 16,158.60
  4. Step 4: Simplify right side
    21,169.80x = 472,886,276.58
  5. Step 5: Solve for x
    x = 472,886,276.58/21,169.80
  6. Step 6: Final answer
    x = 22,337.78

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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.