Home / 13,520.56-18,654.24-10,688.44

Finding the Fourth Proportional to 13,520.56, 18,654.24 and 10,688.44

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Solution

The fourth proportional to 13,520.56, 18,654.24 and 10,688.44 is: 14,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.56 : 18,654.24 = 10,688.44 : x
  2. Step 2: Convert to fraction form
    13,520.56/18,654.24 = 10,688.44/x
  3. Step 3: Cross multiply
    13,520.56x = 18,654.24 × 10,688.44
  4. Step 4: Simplify right side
    13,520.56x = 199,384,724.99
  5. Step 5: Solve for x
    x = 199,384,724.99/13,520.56
  6. Step 6: Final answer
    x = 14,746.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.