Home / 13,760.25-18,989.19-8,455.02

Finding the Fourth Proportional to 13,760.25, 18,989.19 and 8,455.02

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Solution

The fourth proportional to 13,760.25, 18,989.19 and 8,455.02 is: 11,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.25 : 18,989.19 = 8,455.02 : x
  2. Step 2: Convert to fraction form
    13,760.25/18,989.19 = 8,455.02/x
  3. Step 3: Cross multiply
    13,760.25x = 18,989.19 × 8,455.02
  4. Step 4: Simplify right side
    13,760.25x = 160,553,981.23
  5. Step 5: Solve for x
    x = 160,553,981.23/13,760.25
  6. Step 6: Final answer
    x = 11,667.96

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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.