Home / 13,520.57-20,280.85-4,753.44

Finding the Fourth Proportional to 13,520.57, 20,280.85 and 4,753.44

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Solution

The fourth proportional to 13,520.57, 20,280.85 and 4,753.44 is: 7,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.57 : 20,280.85 = 4,753.44 : x
  2. Step 2: Convert to fraction form
    13,520.57/20,280.85 = 4,753.44/x
  3. Step 3: Cross multiply
    13,520.57x = 20,280.85 × 4,753.44
  4. Step 4: Simplify right side
    13,520.57x = 96,403,791.74
  5. Step 5: Solve for x
    x = 96,403,791.74/13,520.57
  6. Step 6: Final answer
    x = 7,130.16

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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.