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Finding the Fourth Proportional to 20,453.29, 30,679.95 and 17,671.54

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Solution

The fourth proportional to 20,453.29, 30,679.95 and 17,671.54 is: 26,507.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.29 : 30,679.95 = 17,671.54 : x
  2. Step 2: Convert to fraction form
    20,453.29/30,679.95 = 17,671.54/x
  3. Step 3: Cross multiply
    20,453.29x = 30,679.95 × 17,671.54
  4. Step 4: Simplify right side
    20,453.29x = 542,162,084.50
  5. Step 5: Solve for x
    x = 542,162,084.50/20,453.29
  6. Step 6: Final answer
    x = 26,507.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.