Home / 12,429.80-18,634.86-8,522.60

Finding the Fourth Proportional to 12,429.80, 18,634.86 and 8,522.60

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Solution

The fourth proportional to 12,429.80, 18,634.86 and 8,522.60 is: 12,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.80 : 18,634.86 = 8,522.60 : x
  2. Step 2: Convert to fraction form
    12,429.80/18,634.86 = 8,522.60/x
  3. Step 3: Cross multiply
    12,429.80x = 18,634.86 × 8,522.60
  4. Step 4: Simplify right side
    12,429.80x = 158,817,457.84
  5. Step 5: Solve for x
    x = 158,817,457.84/12,429.80
  6. Step 6: Final answer
    x = 12,777.15

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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.