Home / 20,265.94-27,969.53-12,306.07

Finding the Fourth Proportional to 20,265.94, 27,969.53 and 12,306.07

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Solution

The fourth proportional to 20,265.94, 27,969.53 and 12,306.07 is: 16,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.94 : 27,969.53 = 12,306.07 : x
  2. Step 2: Convert to fraction form
    20,265.94/27,969.53 = 12,306.07/x
  3. Step 3: Cross multiply
    20,265.94x = 27,969.53 × 12,306.07
  4. Step 4: Simplify right side
    20,265.94x = 344,194,994.05
  5. Step 5: Solve for x
    x = 344,194,994.05/20,265.94
  6. Step 6: Final answer
    x = 16,983.91

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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.