Home / 13,700.45-18,906.63-7,412.81

Finding the Fourth Proportional to 13,700.45, 18,906.63 and 7,412.81

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Solution

The fourth proportional to 13,700.45, 18,906.63 and 7,412.81 is: 10,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.45 : 18,906.63 = 7,412.81 : x
  2. Step 2: Convert to fraction form
    13,700.45/18,906.63 = 7,412.81/x
  3. Step 3: Cross multiply
    13,700.45x = 18,906.63 × 7,412.81
  4. Step 4: Simplify right side
    13,700.45x = 140,151,255.93
  5. Step 5: Solve for x
    x = 140,151,255.93/13,700.45
  6. Step 6: Final answer
    x = 10,229.68

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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.