Home / 18,123.40-27,166.74-12,280.60

Finding the Fourth Proportional to 18,123.40, 27,166.74 and 12,280.60

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Solution

The fourth proportional to 18,123.40, 27,166.74 and 12,280.60 is: 18,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.40 : 27,166.74 = 12,280.60 : x
  2. Step 2: Convert to fraction form
    18,123.40/27,166.74 = 12,280.60/x
  3. Step 3: Cross multiply
    18,123.40x = 27,166.74 × 12,280.60
  4. Step 4: Simplify right side
    18,123.40x = 333,623,867.24
  5. Step 5: Solve for x
    x = 333,623,867.24/18,123.40
  6. Step 6: Final answer
    x = 18,408.46

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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.