Home / 18,123.54-27,180.39-4,972.80

Finding the Fourth Proportional to 18,123.54, 27,180.39 and 4,972.80

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Solution

The fourth proportional to 18,123.54, 27,180.39 and 4,972.80 is: 7,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.54 : 27,180.39 = 4,972.80 : x
  2. Step 2: Convert to fraction form
    18,123.54/27,180.39 = 4,972.80/x
  3. Step 3: Cross multiply
    18,123.54x = 27,180.39 × 4,972.80
  4. Step 4: Simplify right side
    18,123.54x = 135,162,643.39
  5. Step 5: Solve for x
    x = 135,162,643.39/18,123.54
  6. Step 6: Final answer
    x = 7,457.85

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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.