Home / 27,690.45-38,199.54-18,126.15

Finding the Fourth Proportional to 27,690.45, 38,199.54 and 18,126.15

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Solution

The fourth proportional to 27,690.45, 38,199.54 and 18,126.15 is: 25,005.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.45 : 38,199.54 = 18,126.15 : x
  2. Step 2: Convert to fraction form
    27,690.45/38,199.54 = 18,126.15/x
  3. Step 3: Cross multiply
    27,690.45x = 38,199.54 × 18,126.15
  4. Step 4: Simplify right side
    27,690.45x = 692,410,591.97
  5. Step 5: Solve for x
    x = 692,410,591.97/27,690.45
  6. Step 6: Final answer
    x = 25,005.39

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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.