Home / 13,720.05-20,573.96-4,358.34

Finding the Fourth Proportional to 13,720.05, 20,573.96 and 4,358.34

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Solution

The fourth proportional to 13,720.05, 20,573.96 and 4,358.34 is: 6,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.05 : 20,573.96 = 4,358.34 : x
  2. Step 2: Convert to fraction form
    13,720.05/20,573.96 = 4,358.34/x
  3. Step 3: Cross multiply
    13,720.05x = 20,573.96 × 4,358.34
  4. Step 4: Simplify right side
    13,720.05x = 89,668,291.03
  5. Step 5: Solve for x
    x = 89,668,291.03/13,720.05
  6. Step 6: Final answer
    x = 6,535.57

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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.