Home / 13,749.57-20,577.60-8,487.90

Finding the Fourth Proportional to 13,749.57, 20,577.60 and 8,487.90

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Solution

The fourth proportional to 13,749.57, 20,577.60 and 8,487.90 is: 12,702.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.57 : 20,577.60 = 8,487.90 : x
  2. Step 2: Convert to fraction form
    13,749.57/20,577.60 = 8,487.90/x
  3. Step 3: Cross multiply
    13,749.57x = 20,577.60 × 8,487.90
  4. Step 4: Simplify right side
    13,749.57x = 174,660,611.04
  5. Step 5: Solve for x
    x = 174,660,611.04/13,749.57
  6. Step 6: Final answer
    x = 12,702.99

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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.