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Finding the Fourth Proportional to 18,745.68, 28,108.19 and 6,259.13

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Solution

The fourth proportional to 18,745.68, 28,108.19 and 6,259.13 is: 9,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.68 : 28,108.19 = 6,259.13 : x
  2. Step 2: Convert to fraction form
    18,745.68/28,108.19 = 6,259.13/x
  3. Step 3: Cross multiply
    18,745.68x = 28,108.19 × 6,259.13
  4. Step 4: Simplify right side
    18,745.68x = 175,932,690.38
  5. Step 5: Solve for x
    x = 175,932,690.38/18,745.68
  6. Step 6: Final answer
    x = 9,385.24

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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.