Home / 28,390.81-42,591.36-11,741.80

Finding the Fourth Proportional to 28,390.81, 42,591.36 and 11,741.80

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Solution

The fourth proportional to 28,390.81, 42,591.36 and 11,741.80 is: 17,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.81 : 42,591.36 = 11,741.80 : x
  2. Step 2: Convert to fraction form
    28,390.81/42,591.36 = 11,741.80/x
  3. Step 3: Cross multiply
    28,390.81x = 42,591.36 × 11,741.80
  4. Step 4: Simplify right side
    28,390.81x = 500,099,230.85
  5. Step 5: Solve for x
    x = 500,099,230.85/28,390.81
  6. Step 6: Final answer
    x = 17,614.83

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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.