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Finding the Fourth Proportional to 12,797.60, 17,623.93 and 10,990.59

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Solution

The fourth proportional to 12,797.60, 17,623.93 and 10,990.59 is: 15,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.60 : 17,623.93 = 10,990.59 : x
  2. Step 2: Convert to fraction form
    12,797.60/17,623.93 = 10,990.59/x
  3. Step 3: Cross multiply
    12,797.60x = 17,623.93 × 10,990.59
  4. Step 4: Simplify right side
    12,797.60x = 193,697,388.82
  5. Step 5: Solve for x
    x = 193,697,388.82/12,797.60
  6. Step 6: Final answer
    x = 15,135.45

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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.