Home / 12,311.90-18,465.15-3,544.91

Finding the Fourth Proportional to 12,311.90, 18,465.15 and 3,544.91

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Solution

The fourth proportional to 12,311.90, 18,465.15 and 3,544.91 is: 5,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.90 : 18,465.15 = 3,544.91 : x
  2. Step 2: Convert to fraction form
    12,311.90/18,465.15 = 3,544.91/x
  3. Step 3: Cross multiply
    12,311.90x = 18,465.15 × 3,544.91
  4. Step 4: Simplify right side
    12,311.90x = 65,457,341.05
  5. Step 5: Solve for x
    x = 65,457,341.05/12,311.90
  6. Step 6: Final answer
    x = 5,316.59

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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.