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Finding the Fourth Proportional to 19,235, 26,544.30 and 13,655.72

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Solution

The fourth proportional to 19,235, 26,544.30 and 13,655.72 is: 18,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235 : 26,544.30 = 13,655.72 : x
  2. Step 2: Convert to fraction form
    19,235/26,544.30 = 13,655.72/x
  3. Step 3: Cross multiply
    19,235x = 26,544.30 × 13,655.72
  4. Step 4: Simplify right side
    19,235x = 362,481,528.40
  5. Step 5: Solve for x
    x = 362,481,528.40/19,235
  6. Step 6: Final answer
    x = 18,844.89

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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.