Home / 20,154.94-27,821.64-15,133.66

Finding the Fourth Proportional to 20,154.94, 27,821.64 and 15,133.66

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Solution

The fourth proportional to 20,154.94, 27,821.64 and 15,133.66 is: 20,890.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.94 : 27,821.64 = 15,133.66 : x
  2. Step 2: Convert to fraction form
    20,154.94/27,821.64 = 15,133.66/x
  3. Step 3: Cross multiply
    20,154.94x = 27,821.64 × 15,133.66
  4. Step 4: Simplify right side
    20,154.94x = 421,043,240.40
  5. Step 5: Solve for x
    x = 421,043,240.40/20,154.94
  6. Step 6: Final answer
    x = 20,890.32

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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.