Home / 13,446.72-20,167.42-12,779.94

Finding the Fourth Proportional to 13,446.72, 20,167.42 and 12,779.94

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Solution

The fourth proportional to 13,446.72, 20,167.42 and 12,779.94 is: 19,167.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.72 : 20,167.42 = 12,779.94 : x
  2. Step 2: Convert to fraction form
    13,446.72/20,167.42 = 12,779.94/x
  3. Step 3: Cross multiply
    13,446.72x = 20,167.42 × 12,779.94
  4. Step 4: Simplify right side
    13,446.72x = 257,738,252.82
  5. Step 5: Solve for x
    x = 257,738,252.82/13,446.72
  6. Step 6: Final answer
    x = 19,167.37

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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.