Home / 9,518.58-13,135.86-5,540.40

Finding the Fourth Proportional to 9,518.58, 13,135.86 and 5,540.40

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Solution

The fourth proportional to 9,518.58, 13,135.86 and 5,540.40 is: 7,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,518.58 : 13,135.86 = 5,540.40 : x
  2. Step 2: Convert to fraction form
    9,518.58/13,135.86 = 5,540.40/x
  3. Step 3: Cross multiply
    9,518.58x = 13,135.86 × 5,540.40
  4. Step 4: Simplify right side
    9,518.58x = 72,777,918.74
  5. Step 5: Solve for x
    x = 72,777,918.74/9,518.58
  6. Step 6: Final answer
    x = 7,645.88

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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.