Home / 13,634.51-20,430.89-9,175.65

Finding the Fourth Proportional to 13,634.51, 20,430.89 and 9,175.65

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Solution

The fourth proportional to 13,634.51, 20,430.89 and 9,175.65 is: 13,749.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.51 : 20,430.89 = 9,175.65 : x
  2. Step 2: Convert to fraction form
    13,634.51/20,430.89 = 9,175.65/x
  3. Step 3: Cross multiply
    13,634.51x = 20,430.89 × 9,175.65
  4. Step 4: Simplify right side
    13,634.51x = 187,466,570.73
  5. Step 5: Solve for x
    x = 187,466,570.73/13,634.51
  6. Step 6: Final answer
    x = 13,749.42

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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.