Home / 13,588.56-18,753.53-8,288.73

Finding the Fourth Proportional to 13,588.56, 18,753.53 and 8,288.73

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Solution

The fourth proportional to 13,588.56, 18,753.53 and 8,288.73 is: 11,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.56 : 18,753.53 = 8,288.73 : x
  2. Step 2: Convert to fraction form
    13,588.56/18,753.53 = 8,288.73/x
  3. Step 3: Cross multiply
    13,588.56x = 18,753.53 × 8,288.73
  4. Step 4: Simplify right side
    13,588.56x = 155,442,905.27
  5. Step 5: Solve for x
    x = 155,442,905.27/13,588.56
  6. Step 6: Final answer
    x = 11,439.25

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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.