Home / 19,147.38-28,720.86-7,468.80

Finding the Fourth Proportional to 19,147.38, 28,720.86 and 7,468.80

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Solution

The fourth proportional to 19,147.38, 28,720.86 and 7,468.80 is: 11,203.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.38 : 28,720.86 = 7,468.80 : x
  2. Step 2: Convert to fraction form
    19,147.38/28,720.86 = 7,468.80/x
  3. Step 3: Cross multiply
    19,147.38x = 28,720.86 × 7,468.80
  4. Step 4: Simplify right side
    19,147.38x = 214,510,359.17
  5. Step 5: Solve for x
    x = 214,510,359.17/19,147.38
  6. Step 6: Final answer
    x = 11,203.12

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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.