Home / 20,178.84-27,860.52-12,628.23

Finding the Fourth Proportional to 20,178.84, 27,860.52 and 12,628.23

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Solution

The fourth proportional to 20,178.84, 27,860.52 and 12,628.23 is: 17,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.84 : 27,860.52 = 12,628.23 : x
  2. Step 2: Convert to fraction form
    20,178.84/27,860.52 = 12,628.23/x
  3. Step 3: Cross multiply
    20,178.84x = 27,860.52 × 12,628.23
  4. Step 4: Simplify right side
    20,178.84x = 351,829,054.48
  5. Step 5: Solve for x
    x = 351,829,054.48/20,178.84
  6. Step 6: Final answer
    x = 17,435.54

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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.