Home / 13,556.92-20,318.37-7,316.68

Finding the Fourth Proportional to 13,556.92, 20,318.37 and 7,316.68

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Solution

The fourth proportional to 13,556.92, 20,318.37 and 7,316.68 is: 10,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.92 : 20,318.37 = 7,316.68 : x
  2. Step 2: Convert to fraction form
    13,556.92/20,318.37 = 7,316.68/x
  3. Step 3: Cross multiply
    13,556.92x = 20,318.37 × 7,316.68
  4. Step 4: Simplify right side
    13,556.92x = 148,663,011.41
  5. Step 5: Solve for x
    x = 148,663,011.41/13,556.92
  6. Step 6: Final answer
    x = 10,965.84

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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.