Home / 12,150.28-18,225.42-3,385.89

Finding the Fourth Proportional to 12,150.28, 18,225.42 and 3,385.89

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Solution

The fourth proportional to 12,150.28, 18,225.42 and 3,385.89 is: 5,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.28 : 18,225.42 = 3,385.89 : x
  2. Step 2: Convert to fraction form
    12,150.28/18,225.42 = 3,385.89/x
  3. Step 3: Cross multiply
    12,150.28x = 18,225.42 × 3,385.89
  4. Step 4: Simplify right side
    12,150.28x = 61,709,267.32
  5. Step 5: Solve for x
    x = 61,709,267.32/12,150.28
  6. Step 6: Final answer
    x = 5,078.84

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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.