Home / 20,455.00-28,221.11-16,671.66

Finding the Fourth Proportional to 20,455.00, 28,221.11 and 16,671.66

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Solution

The fourth proportional to 20,455.00, 28,221.11 and 16,671.66 is: 23,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.00 : 28,221.11 = 16,671.66 : x
  2. Step 2: Convert to fraction form
    20,455.00/28,221.11 = 16,671.66/x
  3. Step 3: Cross multiply
    20,455.00x = 28,221.11 × 16,671.66
  4. Step 4: Simplify right side
    20,455.00x = 470,492,624.07
  5. Step 5: Solve for x
    x = 470,492,624.07/20,455.00
  6. Step 6: Final answer
    x = 23,001.35

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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.