Home / 12,330.39-18,500.24-7,403.46

Finding the Fourth Proportional to 12,330.39, 18,500.24 and 7,403.46

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Solution

The fourth proportional to 12,330.39, 18,500.24 and 7,403.46 is: 11,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.39 : 18,500.24 = 7,403.46 : x
  2. Step 2: Convert to fraction form
    12,330.39/18,500.24 = 7,403.46/x
  3. Step 3: Cross multiply
    12,330.39x = 18,500.24 × 7,403.46
  4. Step 4: Simplify right side
    12,330.39x = 136,965,749.81
  5. Step 5: Solve for x
    x = 136,965,749.81/12,330.39
  6. Step 6: Final answer
    x = 11,107.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.