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Finding the Fourth Proportional to 18,603.78, 25,671.90 and 10,538.25

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Solution

The fourth proportional to 18,603.78, 25,671.90 and 10,538.25 is: 14,542.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.78 : 25,671.90 = 10,538.25 : x
  2. Step 2: Convert to fraction form
    18,603.78/25,671.90 = 10,538.25/x
  3. Step 3: Cross multiply
    18,603.78x = 25,671.90 × 10,538.25
  4. Step 4: Simplify right side
    18,603.78x = 270,536,900.18
  5. Step 5: Solve for x
    x = 270,536,900.18/18,603.78
  6. Step 6: Final answer
    x = 14,542.04

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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.