Home / 20,282.47-27,989.74-11,329.99

Finding the Fourth Proportional to 20,282.47, 27,989.74 and 11,329.99

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Solution

The fourth proportional to 20,282.47, 27,989.74 and 11,329.99 is: 15,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.47 : 27,989.74 = 11,329.99 : x
  2. Step 2: Convert to fraction form
    20,282.47/27,989.74 = 11,329.99/x
  3. Step 3: Cross multiply
    20,282.47x = 27,989.74 × 11,329.99
  4. Step 4: Simplify right side
    20,282.47x = 317,123,474.30
  5. Step 5: Solve for x
    x = 317,123,474.30/20,282.47
  6. Step 6: Final answer
    x = 15,635.35

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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.