Home / 13,720.59-20,533.50-8,453.57

Finding the Fourth Proportional to 13,720.59, 20,533.50 and 8,453.57

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Solution

The fourth proportional to 13,720.59, 20,533.50 and 8,453.57 is: 12,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.59 : 20,533.50 = 8,453.57 : x
  2. Step 2: Convert to fraction form
    13,720.59/20,533.50 = 8,453.57/x
  3. Step 3: Cross multiply
    13,720.59x = 20,533.50 × 8,453.57
  4. Step 4: Simplify right side
    13,720.59x = 173,581,276.93
  5. Step 5: Solve for x
    x = 173,581,276.93/13,720.59
  6. Step 6: Final answer
    x = 12,651.15

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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.