Home / 28,198.66-38,914.54-15,451.59

Finding the Fourth Proportional to 28,198.66, 38,914.54 and 15,451.59

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Solution

The fourth proportional to 28,198.66, 38,914.54 and 15,451.59 is: 21,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.66 : 38,914.54 = 15,451.59 : x
  2. Step 2: Convert to fraction form
    28,198.66/38,914.54 = 15,451.59/x
  3. Step 3: Cross multiply
    28,198.66x = 38,914.54 × 15,451.59
  4. Step 4: Simplify right side
    28,198.66x = 601,291,439.86
  5. Step 5: Solve for x
    x = 601,291,439.86/28,198.66
  6. Step 6: Final answer
    x = 21,323.40

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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.