Home / 19,857.46-27,403.35-10,905.55

Finding the Fourth Proportional to 19,857.46, 27,403.35 and 10,905.55

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Solution

The fourth proportional to 19,857.46, 27,403.35 and 10,905.55 is: 15,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.46 : 27,403.35 = 10,905.55 : x
  2. Step 2: Convert to fraction form
    19,857.46/27,403.35 = 10,905.55/x
  3. Step 3: Cross multiply
    19,857.46x = 27,403.35 × 10,905.55
  4. Step 4: Simplify right side
    19,857.46x = 298,848,603.59
  5. Step 5: Solve for x
    x = 298,848,603.59/19,857.46
  6. Step 6: Final answer
    x = 15,049.69

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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.