Home / 15,142.18-20,893.61-13,917.31

Finding the Fourth Proportional to 15,142.18, 20,893.61 and 13,917.31

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Solution

The fourth proportional to 15,142.18, 20,893.61 and 13,917.31 is: 19,203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,142.18 : 20,893.61 = 13,917.31 : x
  2. Step 2: Convert to fraction form
    15,142.18/20,893.61 = 13,917.31/x
  3. Step 3: Cross multiply
    15,142.18x = 20,893.61 × 13,917.31
  4. Step 4: Simplify right side
    15,142.18x = 290,782,847.39
  5. Step 5: Solve for x
    x = 290,782,847.39/15,142.18
  6. Step 6: Final answer
    x = 19,203.50

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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.