Home / 18,736.80-28,123.40-14,621.60

Finding the Fourth Proportional to 18,736.80, 28,123.40 and 14,621.60

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Solution

The fourth proportional to 18,736.80, 28,123.40 and 14,621.60 is: 21,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.80 : 28,123.40 = 14,621.60 : x
  2. Step 2: Convert to fraction form
    18,736.80/28,123.40 = 14,621.60/x
  3. Step 3: Cross multiply
    18,736.80x = 28,123.40 × 14,621.60
  4. Step 4: Simplify right side
    18,736.80x = 411,209,105.44
  5. Step 5: Solve for x
    x = 411,209,105.44/18,736.80
  6. Step 6: Final answer
    x = 21,946.60

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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.