Home / 12,125.28-16,732.44-7,089.78

Finding the Fourth Proportional to 12,125.28, 16,732.44 and 7,089.78

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Solution

The fourth proportional to 12,125.28, 16,732.44 and 7,089.78 is: 9,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.28 : 16,732.44 = 7,089.78 : x
  2. Step 2: Convert to fraction form
    12,125.28/16,732.44 = 7,089.78/x
  3. Step 3: Cross multiply
    12,125.28x = 16,732.44 × 7,089.78
  4. Step 4: Simplify right side
    12,125.28x = 118,629,318.46
  5. Step 5: Solve for x
    x = 118,629,318.46/12,125.28
  6. Step 6: Final answer
    x = 9,783.64

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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.