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Finding the Fourth Proportional to 16,922.60, 25,406.70 and 9,909.80

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Solution

The fourth proportional to 16,922.60, 25,406.70 and 9,909.80 is: 14,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,922.60 : 25,406.70 = 9,909.80 : x
  2. Step 2: Convert to fraction form
    16,922.60/25,406.70 = 9,909.80/x
  3. Step 3: Cross multiply
    16,922.60x = 25,406.70 × 9,909.80
  4. Step 4: Simplify right side
    16,922.60x = 251,775,315.66
  5. Step 5: Solve for x
    x = 251,775,315.66/16,922.60
  6. Step 6: Final answer
    x = 14,878.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.