Home / 13,338.76-18,406.56-7,370.32

Finding the Fourth Proportional to 13,338.76, 18,406.56 and 7,370.32

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Solution

The fourth proportional to 13,338.76, 18,406.56 and 7,370.32 is: 10,170.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.76 : 18,406.56 = 7,370.32 : x
  2. Step 2: Convert to fraction form
    13,338.76/18,406.56 = 7,370.32/x
  3. Step 3: Cross multiply
    13,338.76x = 18,406.56 × 7,370.32
  4. Step 4: Simplify right side
    13,338.76x = 135,662,237.30
  5. Step 5: Solve for x
    x = 135,662,237.30/13,338.76
  6. Step 6: Final answer
    x = 10,170.53

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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.