Home / 13,140.60-18,133.27-7,474.56

Finding the Fourth Proportional to 13,140.60, 18,133.27 and 7,474.56

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Solution

The fourth proportional to 13,140.60, 18,133.27 and 7,474.56 is: 10,314.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.60 : 18,133.27 = 7,474.56 : x
  2. Step 2: Convert to fraction form
    13,140.60/18,133.27 = 7,474.56/x
  3. Step 3: Cross multiply
    13,140.60x = 18,133.27 × 7,474.56
  4. Step 4: Simplify right side
    13,140.60x = 135,538,195.92
  5. Step 5: Solve for x
    x = 135,538,195.92/13,140.60
  6. Step 6: Final answer
    x = 10,314.46

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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.