Home / 12,158.79-16,792.97-8,172.99

Finding the Fourth Proportional to 12,158.79, 16,792.97 and 8,172.99

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Solution

The fourth proportional to 12,158.79, 16,792.97 and 8,172.99 is: 11,288.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.79 : 16,792.97 = 8,172.99 : x
  2. Step 2: Convert to fraction form
    12,158.79/16,792.97 = 8,172.99/x
  3. Step 3: Cross multiply
    12,158.79x = 16,792.97 × 8,172.99
  4. Step 4: Simplify right side
    12,158.79x = 137,248,775.88
  5. Step 5: Solve for x
    x = 137,248,775.88/12,158.79
  6. Step 6: Final answer
    x = 11,288.03

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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.