Home / 13,450.68-18,570.23-8,672.31

Finding the Fourth Proportional to 13,450.68, 18,570.23 and 8,672.31

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Solution

The fourth proportional to 13,450.68, 18,570.23 and 8,672.31 is: 11,973.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.68 : 18,570.23 = 8,672.31 : x
  2. Step 2: Convert to fraction form
    13,450.68/18,570.23 = 8,672.31/x
  3. Step 3: Cross multiply
    13,450.68x = 18,570.23 × 8,672.31
  4. Step 4: Simplify right side
    13,450.68x = 161,046,747.97
  5. Step 5: Solve for x
    x = 161,046,747.97/13,450.68
  6. Step 6: Final answer
    x = 11,973.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.