Home / 19,858.64-27,405-10,905.91

Finding the Fourth Proportional to 19,858.64, 27,405 and 10,905.91

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Solution

The fourth proportional to 19,858.64, 27,405 and 10,905.91 is: 15,050.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.64 : 27,405 = 10,905.91 : x
  2. Step 2: Convert to fraction form
    19,858.64/27,405 = 10,905.91/x
  3. Step 3: Cross multiply
    19,858.64x = 27,405 × 10,905.91
  4. Step 4: Simplify right side
    19,858.64x = 298,876,395.04
  5. Step 5: Solve for x
    x = 298,876,395.04/19,858.64
  6. Step 6: Final answer
    x = 15,050.20

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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.