Home / 12,150.56-18,225.86-3,385.71

Finding the Fourth Proportional to 12,150.56, 18,225.86 and 3,385.71

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Solution

The fourth proportional to 12,150.56, 18,225.86 and 3,385.71 is: 5,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.56 : 18,225.86 = 3,385.71 : x
  2. Step 2: Convert to fraction form
    12,150.56/18,225.86 = 3,385.71/x
  3. Step 3: Cross multiply
    12,150.56x = 18,225.86 × 3,385.71
  4. Step 4: Simplify right side
    12,150.56x = 61,707,459.53
  5. Step 5: Solve for x
    x = 61,707,459.53/12,150.56
  6. Step 6: Final answer
    x = 5,078.57

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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.