Home / 27,738.18-38,278.69-14,991.33

Finding the Fourth Proportional to 27,738.18, 38,278.69 and 14,991.33

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Solution

The fourth proportional to 27,738.18, 38,278.69 and 14,991.33 is: 20,688.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.18 : 38,278.69 = 14,991.33 : x
  2. Step 2: Convert to fraction form
    27,738.18/38,278.69 = 14,991.33/x
  3. Step 3: Cross multiply
    27,738.18x = 38,278.69 × 14,991.33
  4. Step 4: Simplify right side
    27,738.18x = 573,848,448.83
  5. Step 5: Solve for x
    x = 573,848,448.83/27,738.18
  6. Step 6: Final answer
    x = 20,688.04

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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.