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Finding the Fourth Proportional to 18,745.48, 28,100.94 and 9,509.32

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Solution

The fourth proportional to 18,745.48, 28,100.94 and 9,509.32 is: 14,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.48 : 28,100.94 = 9,509.32 : x
  2. Step 2: Convert to fraction form
    18,745.48/28,100.94 = 9,509.32/x
  3. Step 3: Cross multiply
    18,745.48x = 28,100.94 × 9,509.32
  4. Step 4: Simplify right side
    18,745.48x = 267,220,830.76
  5. Step 5: Solve for x
    x = 267,220,830.76/18,745.48
  6. Step 6: Final answer
    x = 14,255.21

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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.