Home / 13,516.40-20,278.49-4,157.75

Finding the Fourth Proportional to 13,516.40, 20,278.49 and 4,157.75

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Solution

The fourth proportional to 13,516.40, 20,278.49 and 4,157.75 is: 6,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.40 : 20,278.49 = 4,157.75 : x
  2. Step 2: Convert to fraction form
    13,516.40/20,278.49 = 4,157.75/x
  3. Step 3: Cross multiply
    13,516.40x = 20,278.49 × 4,157.75
  4. Step 4: Simplify right side
    13,516.40x = 84,312,789.19
  5. Step 5: Solve for x
    x = 84,312,789.19/13,516.40
  6. Step 6: Final answer
    x = 6,237.82

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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.