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Finding the Fourth Proportional to 18,702.77, 25,810.82 and 10,745.51

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Solution

The fourth proportional to 18,702.77, 25,810.82 and 10,745.51 is: 14,829.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.77 : 25,810.82 = 10,745.51 : x
  2. Step 2: Convert to fraction form
    18,702.77/25,810.82 = 10,745.51/x
  3. Step 3: Cross multiply
    18,702.77x = 25,810.82 × 10,745.51
  4. Step 4: Simplify right side
    18,702.77x = 277,350,424.42
  5. Step 5: Solve for x
    x = 277,350,424.42/18,702.77
  6. Step 6: Final answer
    x = 14,829.38

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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.