Home / 14,791.36-20,412.90-8,077.61

Finding the Fourth Proportional to 14,791.36, 20,412.90 and 8,077.61

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Solution

The fourth proportional to 14,791.36, 20,412.90 and 8,077.61 is: 11,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.36 : 20,412.90 = 8,077.61 : x
  2. Step 2: Convert to fraction form
    14,791.36/20,412.90 = 8,077.61/x
  3. Step 3: Cross multiply
    14,791.36x = 20,412.90 × 8,077.61
  4. Step 4: Simplify right side
    14,791.36x = 164,887,343.10
  5. Step 5: Solve for x
    x = 164,887,343.10/14,791.36
  6. Step 6: Final answer
    x = 11,147.55

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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.