Home / 20,322.68-28,043.70-11,369.48

Finding the Fourth Proportional to 20,322.68, 28,043.70 and 11,369.48

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Solution

The fourth proportional to 20,322.68, 28,043.70 and 11,369.48 is: 15,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.68 : 28,043.70 = 11,369.48 : x
  2. Step 2: Convert to fraction form
    20,322.68/28,043.70 = 11,369.48/x
  3. Step 3: Cross multiply
    20,322.68x = 28,043.70 × 11,369.48
  4. Step 4: Simplify right side
    20,322.68x = 318,842,286.28
  5. Step 5: Solve for x
    x = 318,842,286.28/20,322.68
  6. Step 6: Final answer
    x = 15,688.99

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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.