Home / 13,555.07-20,338.45-5,240.94

Finding the Fourth Proportional to 13,555.07, 20,338.45 and 5,240.94

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Solution

The fourth proportional to 13,555.07, 20,338.45 and 5,240.94 is: 7,863.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.07 : 20,338.45 = 5,240.94 : x
  2. Step 2: Convert to fraction form
    13,555.07/20,338.45 = 5,240.94/x
  3. Step 3: Cross multiply
    13,555.07x = 20,338.45 × 5,240.94
  4. Step 4: Simplify right side
    13,555.07x = 106,592,629.42
  5. Step 5: Solve for x
    x = 106,592,629.42/13,555.07
  6. Step 6: Final answer
    x = 7,863.67

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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.