Home / 12,429.20-17,149.48-9,073.84

Finding the Fourth Proportional to 12,429.20, 17,149.48 and 9,073.84

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Solution

The fourth proportional to 12,429.20, 17,149.48 and 9,073.84 is: 12,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.20 : 17,149.48 = 9,073.84 : x
  2. Step 2: Convert to fraction form
    12,429.20/17,149.48 = 9,073.84/x
  3. Step 3: Cross multiply
    12,429.20x = 17,149.48 × 9,073.84
  4. Step 4: Simplify right side
    12,429.20x = 155,611,637.60
  5. Step 5: Solve for x
    x = 155,611,637.60/12,429.20
  6. Step 6: Final answer
    x = 12,519.84

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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.