Home / 13,653.32-20,453.70-8,372.91

Finding the Fourth Proportional to 13,653.32, 20,453.70 and 8,372.91

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Solution

The fourth proportional to 13,653.32, 20,453.70 and 8,372.91 is: 12,543.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.32 : 20,453.70 = 8,372.91 : x
  2. Step 2: Convert to fraction form
    13,653.32/20,453.70 = 8,372.91/x
  3. Step 3: Cross multiply
    13,653.32x = 20,453.70 × 8,372.91
  4. Step 4: Simplify right side
    13,653.32x = 171,256,989.27
  5. Step 5: Solve for x
    x = 171,256,989.27/13,653.32
  6. Step 6: Final answer
    x = 12,543.25

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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.