Home / 13,673.50-20,502.43-8,130.72

Finding the Fourth Proportional to 13,673.50, 20,502.43 and 8,130.72

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Solution

The fourth proportional to 13,673.50, 20,502.43 and 8,130.72 is: 12,191.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.50 : 20,502.43 = 8,130.72 : x
  2. Step 2: Convert to fraction form
    13,673.50/20,502.43 = 8,130.72/x
  3. Step 3: Cross multiply
    13,673.50x = 20,502.43 × 8,130.72
  4. Step 4: Simplify right side
    13,673.50x = 166,699,517.65
  5. Step 5: Solve for x
    x = 166,699,517.65/13,673.50
  6. Step 6: Final answer
    x = 12,191.43

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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.