Home / 13,580.42-20,359.67-5,256.14

Finding the Fourth Proportional to 13,580.42, 20,359.67 and 5,256.14

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Solution

The fourth proportional to 13,580.42, 20,359.67 and 5,256.14 is: 7,879.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.42 : 20,359.67 = 5,256.14 : x
  2. Step 2: Convert to fraction form
    13,580.42/20,359.67 = 5,256.14/x
  3. Step 3: Cross multiply
    13,580.42x = 20,359.67 × 5,256.14
  4. Step 4: Simplify right side
    13,580.42x = 107,013,147.79
  5. Step 5: Solve for x
    x = 107,013,147.79/13,580.42
  6. Step 6: Final answer
    x = 7,879.96

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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.