Home / 12,346.86-18,515.43-5,416.50

Finding the Fourth Proportional to 12,346.86, 18,515.43 and 5,416.50

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Solution

The fourth proportional to 12,346.86, 18,515.43 and 5,416.50 is: 8,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346.86 : 18,515.43 = 5,416.50 : x
  2. Step 2: Convert to fraction form
    12,346.86/18,515.43 = 5,416.50/x
  3. Step 3: Cross multiply
    12,346.86x = 18,515.43 × 5,416.50
  4. Step 4: Simplify right side
    12,346.86x = 100,288,826.60
  5. Step 5: Solve for x
    x = 100,288,826.60/12,346.86
  6. Step 6: Final answer
    x = 8,122.62

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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.