Home / 15,188.60-20,959.62-8,814.69

Finding the Fourth Proportional to 15,188.60, 20,959.62 and 8,814.69

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Solution

The fourth proportional to 15,188.60, 20,959.62 and 8,814.69 is: 12,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.60 : 20,959.62 = 8,814.69 : x
  2. Step 2: Convert to fraction form
    15,188.60/20,959.62 = 8,814.69/x
  3. Step 3: Cross multiply
    15,188.60x = 20,959.62 × 8,814.69
  4. Step 4: Simplify right side
    15,188.60x = 184,752,544.55
  5. Step 5: Solve for x
    x = 184,752,544.55/15,188.60
  6. Step 6: Final answer
    x = 12,163.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.