Home / 13,588.64-20,379.71-7,011.44

Finding the Fourth Proportional to 13,588.64, 20,379.71 and 7,011.44

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Solution

The fourth proportional to 13,588.64, 20,379.71 and 7,011.44 is: 10,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.64 : 20,379.71 = 7,011.44 : x
  2. Step 2: Convert to fraction form
    13,588.64/20,379.71 = 7,011.44/x
  3. Step 3: Cross multiply
    13,588.64x = 20,379.71 × 7,011.44
  4. Step 4: Simplify right side
    13,588.64x = 142,890,976.93
  5. Step 5: Solve for x
    x = 142,890,976.93/13,588.64
  6. Step 6: Final answer
    x = 10,515.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.