Home / 13,715.78-20,575.49-6,321.92

Finding the Fourth Proportional to 13,715.78, 20,575.49 and 6,321.92

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Solution

The fourth proportional to 13,715.78, 20,575.49 and 6,321.92 is: 9,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.78 : 20,575.49 = 6,321.92 : x
  2. Step 2: Convert to fraction form
    13,715.78/20,575.49 = 6,321.92/x
  3. Step 3: Cross multiply
    13,715.78x = 20,575.49 × 6,321.92
  4. Step 4: Simplify right side
    13,715.78x = 130,076,467.25
  5. Step 5: Solve for x
    x = 130,076,467.25/13,715.78
  6. Step 6: Final answer
    x = 9,483.71

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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.