Home / 20,178.09-27,859.49-12,627.48

Finding the Fourth Proportional to 20,178.09, 27,859.49 and 12,627.48

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Solution

The fourth proportional to 20,178.09, 27,859.49 and 12,627.48 is: 17,434.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.09 : 27,859.49 = 12,627.48 : x
  2. Step 2: Convert to fraction form
    20,178.09/27,859.49 = 12,627.48/x
  3. Step 3: Cross multiply
    20,178.09x = 27,859.49 × 12,627.48
  4. Step 4: Simplify right side
    20,178.09x = 351,794,950.35
  5. Step 5: Solve for x
    x = 351,794,950.35/20,178.09
  6. Step 6: Final answer
    x = 17,434.50

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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.