Home / 28,519.25-42,778.71-7,742.75

Finding the Fourth Proportional to 28,519.25, 42,778.71 and 7,742.75

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Solution

The fourth proportional to 28,519.25, 42,778.71 and 7,742.75 is: 11,614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.25 : 42,778.71 = 7,742.75 : x
  2. Step 2: Convert to fraction form
    28,519.25/42,778.71 = 7,742.75/x
  3. Step 3: Cross multiply
    28,519.25x = 42,778.71 × 7,742.75
  4. Step 4: Simplify right side
    28,519.25x = 331,224,642.96
  5. Step 5: Solve for x
    x = 331,224,642.96/28,519.25
  6. Step 6: Final answer
    x = 11,614.07

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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.