Home / 13,518.45-18,656.19-7,550.25

Finding the Fourth Proportional to 13,518.45, 18,656.19 and 7,550.25

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Solution

The fourth proportional to 13,518.45, 18,656.19 and 7,550.25 is: 10,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.45 : 18,656.19 = 7,550.25 : x
  2. Step 2: Convert to fraction form
    13,518.45/18,656.19 = 7,550.25/x
  3. Step 3: Cross multiply
    13,518.45x = 18,656.19 × 7,550.25
  4. Step 4: Simplify right side
    13,518.45x = 140,858,898.55
  5. Step 5: Solve for x
    x = 140,858,898.55/13,518.45
  6. Step 6: Final answer
    x = 10,419.75

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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.