Home / 13,520.34-18,753.53-13,160.70

Finding the Fourth Proportional to 13,520.34, 18,753.53 and 13,160.70

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Solution

The fourth proportional to 13,520.34, 18,753.53 and 13,160.70 is: 18,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.34 : 18,753.53 = 13,160.70 : x
  2. Step 2: Convert to fraction form
    13,520.34/18,753.53 = 13,160.70/x
  3. Step 3: Cross multiply
    13,520.34x = 18,753.53 × 13,160.70
  4. Step 4: Simplify right side
    13,520.34x = 246,809,516.47
  5. Step 5: Solve for x
    x = 246,809,516.47/13,520.34
  6. Step 6: Final answer
    x = 18,254.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.