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Finding the Fourth Proportional to 19,239, 26,549.82 and 13,659.72

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Solution

The fourth proportional to 19,239, 26,549.82 and 13,659.72 is: 18,850.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,239 : 26,549.82 = 13,659.72 : x
  2. Step 2: Convert to fraction form
    19,239/26,549.82 = 13,659.72/x
  3. Step 3: Cross multiply
    19,239x = 26,549.82 × 13,659.72
  4. Step 4: Simplify right side
    19,239x = 362,663,107.25
  5. Step 5: Solve for x
    x = 362,663,107.25/19,239
  6. Step 6: Final answer
    x = 18,850.41

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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.