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Finding the Fourth Proportional to 18,702.65, 25,810.65 and 10,745.39

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Solution

The fourth proportional to 18,702.65, 25,810.65 and 10,745.39 is: 14,829.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.65 : 25,810.65 = 10,745.39 : x
  2. Step 2: Convert to fraction form
    18,702.65/25,810.65 = 10,745.39/x
  3. Step 3: Cross multiply
    18,702.65x = 25,810.65 × 10,745.39
  4. Step 4: Simplify right side
    18,702.65x = 277,345,500.40
  5. Step 5: Solve for x
    x = 277,345,500.40/18,702.65
  6. Step 6: Final answer
    x = 14,829.21

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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.