Home / 18,732.80-28,117.40-14,617.60

Finding the Fourth Proportional to 18,732.80, 28,117.40 and 14,617.60

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Solution

The fourth proportional to 18,732.80, 28,117.40 and 14,617.60 is: 21,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,732.80 : 28,117.40 = 14,617.60 : x
  2. Step 2: Convert to fraction form
    18,732.80/28,117.40 = 14,617.60/x
  3. Step 3: Cross multiply
    18,732.80x = 28,117.40 × 14,617.60
  4. Step 4: Simplify right side
    18,732.80x = 411,008,906.24
  5. Step 5: Solve for x
    x = 411,008,906.24/18,732.80
  6. Step 6: Final answer
    x = 21,940.60

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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.