Home / 13,658.40-18,844.80-8,352.72

Finding the Fourth Proportional to 13,658.40, 18,844.80 and 8,352.72

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Solution

The fourth proportional to 13,658.40, 18,844.80 and 8,352.72 is: 11,524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.40 : 18,844.80 = 8,352.72 : x
  2. Step 2: Convert to fraction form
    13,658.40/18,844.80 = 8,352.72/x
  3. Step 3: Cross multiply
    13,658.40x = 18,844.80 × 8,352.72
  4. Step 4: Simplify right side
    13,658.40x = 157,405,337.86
  5. Step 5: Solve for x
    x = 157,405,337.86/13,658.40
  6. Step 6: Final answer
    x = 11,524.43

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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.