Home / 13,743.15-18,966.01-8,077.82

Finding the Fourth Proportional to 13,743.15, 18,966.01 and 8,077.82

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Solution

The fourth proportional to 13,743.15, 18,966.01 and 8,077.82 is: 11,147.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.15 : 18,966.01 = 8,077.82 : x
  2. Step 2: Convert to fraction form
    13,743.15/18,966.01 = 8,077.82/x
  3. Step 3: Cross multiply
    13,743.15x = 18,966.01 × 8,077.82
  4. Step 4: Simplify right side
    13,743.15x = 153,203,879.68
  5. Step 5: Solve for x
    x = 153,203,879.68/13,743.15
  6. Step 6: Final answer
    x = 11,147.65

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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.