Home / 19,857.42-27,403.56-10,905.75

Finding the Fourth Proportional to 19,857.42, 27,403.56 and 10,905.75

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Solution

The fourth proportional to 19,857.42, 27,403.56 and 10,905.75 is: 15,050.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.42 : 27,403.56 = 10,905.75 : x
  2. Step 2: Convert to fraction form
    19,857.42/27,403.56 = 10,905.75/x
  3. Step 3: Cross multiply
    19,857.42x = 27,403.56 × 10,905.75
  4. Step 4: Simplify right side
    19,857.42x = 298,856,374.47
  5. Step 5: Solve for x
    x = 298,856,374.47/19,857.42
  6. Step 6: Final answer
    x = 15,050.11

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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.