Home / 13,750.60-18,973.38-8,086.48

Finding the Fourth Proportional to 13,750.60, 18,973.38 and 8,086.48

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Solution

The fourth proportional to 13,750.60, 18,973.38 and 8,086.48 is: 11,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.60 : 18,973.38 = 8,086.48 : x
  2. Step 2: Convert to fraction form
    13,750.60/18,973.38 = 8,086.48/x
  3. Step 3: Cross multiply
    13,750.60x = 18,973.38 × 8,086.48
  4. Step 4: Simplify right side
    13,750.60x = 153,427,857.90
  5. Step 5: Solve for x
    x = 153,427,857.90/13,750.60
  6. Step 6: Final answer
    x = 11,157.90

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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.