Home / 13,518.81-18,655.92-7,550.48

Finding the Fourth Proportional to 13,518.81, 18,655.92 and 7,550.48

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Solution

The fourth proportional to 13,518.81, 18,655.92 and 7,550.48 is: 10,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.81 : 18,655.92 = 7,550.48 : x
  2. Step 2: Convert to fraction form
    13,518.81/18,655.92 = 7,550.48/x
  3. Step 3: Cross multiply
    13,518.81x = 18,655.92 × 7,550.48
  4. Step 4: Simplify right side
    13,518.81x = 140,861,197.48
  5. Step 5: Solve for x
    x = 140,861,197.48/13,518.81
  6. Step 6: Final answer
    x = 10,419.64

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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.