Home / 13,559.40-20,338.38-4,324.68

Finding the Fourth Proportional to 13,559.40, 20,338.38 and 4,324.68

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Solution

The fourth proportional to 13,559.40, 20,338.38 and 4,324.68 is: 6,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.40 : 20,338.38 = 4,324.68 : x
  2. Step 2: Convert to fraction form
    13,559.40/20,338.38 = 4,324.68/x
  3. Step 3: Cross multiply
    13,559.40x = 20,338.38 × 4,324.68
  4. Step 4: Simplify right side
    13,559.40x = 87,956,985.22
  5. Step 5: Solve for x
    x = 87,956,985.22/13,559.40
  6. Step 6: Final answer
    x = 6,486.79

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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.